Aries: Lots of hugs. They will often challenge you, whether this is challenging your beliefs or trying to prove their worth by winning a game. They get jealous easily and may come off as harsh when they see you flirting with or giving attention to someone else. They will think about you more than they like to admit. They will want to be updated with what's going on in your life, and will actually show interest in your routines/interactions with others. There is a good chance these guys will just tell you how they feel.
Taurus: They'll ask for your opinions on things and will try to hold stimulating conversations with you. All of your quirks and bad habits will become cute to them. They will look at you like you are this special human being who must be protected at all costs. Sometimes they'll make fun of you, but all good natured. You will consume their thoughts. They will compliment you on things they admire about you in an almost-manipulative way of letting you know who they want you to be. All earth signs are somewhat manipulative. Taurus' are just so sweet when they like someone, they constantly fear that once they open up, they'll be misunderstood or rejected, so don't be discouraged by a more reserved presence. This is why they want to know so much about you.
Gemini: Witty and talkative. You may think they are always this way, but if they like you, you'll see it in their eyes. They can be absolutely weird when talking to their crush. They let their guard down. They'll try to treat you like just another friend if they don't want to be too obvious about it, but still they'll pay more attention to what you have to say. They can be touchy, similar to Leo's, but more spontaneous. Be careful with Gemini's, they look at love as an experience/adventure; they are most likely to lead someone on for the thrill of it. They'll also be really supportive and encourage you to go after what you want. They want the best for you.
Cancer: Shy and so sweet. All of their friends are 100% aware that they like you. You can probably know more about how a Cancer feels about you by observing how their friends act around you. They are not exactly coy, but more cautious. Lots of soft eyes and smiles. They won't hesitate to ask if you're okay or how you're doing, unless they doubt themselves. If you see them looking at you, they are trying to figure out what to say to you or a way to subtly interact with you. They fear rejection, so they are probably least likely to make the first move.
Leo: They'll probably flat out tell you that they like you. Everyone within earshot will know it. They get really touchy feely and will play games with you. They will say some things and you'll be like what the heck are you talking about, but forgive them, it's their way of being nervous, even if they don't know it. They'll want to be around you. They will make more eye contact than they typically would with other people. If they really like you, they'll adopt this special "voice" which they will only talk to you in. It's often softer, sweeter, and really irresistible. They can be so protective. They also try to impress you and it may come off as arrogant.
Virgo: They will challenge you, but not in the same way that Aries does. Virgo's tend to display their more negative qualities (sometimes on accident to see if you are worth their time.) They tend to be very insecure, so they need to know that you will stand by them at their worst. They will certainly pick out your flaws if they like you and may be harder on you because they want you to be the best you that you can be. They may tag along with your friend group to be around you. They often misinterpret feelings so they may share the "hot and cold" nature that Capricorns have because they are paranoid. They'll open up to you just a bit more than they would with others. They want to make sure you stimulate them intellectually before they get too serious, this is important to them.
Libra: A good way to determine whether they like you is by asking around- if a Libra likes you, they will never say no when asked by others if they like you (unless they have good reason). They will try to be around you frequently and will try to show you their best side. They will treat you differently than other people if they like you, so watch out for any soft voices or loving eyes that they save for only a special someone.
Scorpio: If they give you any special attention at all, this is a good sign. Scorpios are typically indifferent to people who do not interest/benefit them in the slightest. Scorpios are known for their impulsive wit and charm, but can be a bit more awkward (in a cute way) and less witty around their crush. Expect intense eye contact and lots of "subtle" staring from a smitten Scorpio. They are very protective, sometimes even possessive over their crush. Their eyes will light up with curiosity or lust at the mention of you.
Sagittarius: They try extra hard to make you laugh. They can be very childish and just want you to see the adventure in everything. They will try to impress you with their random acquired skills, which can range from being able to identify every bird in sight to the capability of balancing a pencil on their nose for several minutes. Sometimes they stutter or are more shy around the person they like, which is a telltale because Sags are nearly always outgoing or at least projective of what's going on with them. They will compliment you a lot. They will try to be what they think you want. Capricorns do this too, but they merely deduce your personality and accentuate the features they think you'll appreciate. While Sags think they are doing what Capricorns do so well, they really need to find someone who will accept them for who they are.
Capricorn: They will be very hot and cold. One day, they can be outrageous and flirty and coy, but you can bet your life that they will go home and overthink it and the next day they will give their utmost effort to avoid you or seem indifferent towards you. This is because Capricorns have a superiority complex, and sometimes a crush makes them feel weak; they are afraid of getting hurt so they will never act too smitten for too long. This is why most Capricorns will not admit to their feelings until they are secure in the fact that you feel the same way. A Capricorn will also try to help you and give you advice, not because they think you are wrong or in need of actual help, but because they care about your well being and want you to live the best life you can. They will try to impress you with their unique talents or philosophies. They can be very coy and charming. They have intense eye contact with you and are chivalrous regardless of gender; they love holding doors for their crush. They will never forget a single thing you say or do.
Aquarius: They will want to hang around you. They tend to be more reserved emotionally, but will mess around with you to cope. Like Gemini, they will encourage you to go after what they think is best for you. If you are currently interested in someone else, a crushing Aquarius will not be too fond of said person and try to convince you that you "deserve better." They will not let conversations die. Aquarians don't have the greatest attention span so they definitely admire you in some way if they hold conversations with you, especially over text. Lots of laughter and staring, they probably won't even look away when you make eye contact with them. Actually, they may just laugh out loud. They are often more courteous of you than they are with others
Pisces: Are coy and giggly. They are the ultimate dreamers and will utterly want to share these dreams and desires with you. They can be pretty awkward, but it's cute. They'll try to look their best around you. They get a bit shy, but are almost always in a flirty mood. Lots of poking and material stealing and cute doodles. The boys are the epitome of a "middle school crush". The boys tend to be this way more than the girls because sometimes the girls consider it childish. They are most likely to stalk you on social media. Pisces flirt immensely through technology, and are great at sending cute texts or messages. This is often because they stutter or withdraw in real life. If they are single and ready to mingle, you'll know, with frequent sighs and several exclamations of "no one likes me" followed by insecure laughter.