[ tok-kun5045 here is the official answer to your question]
Max: Uh.. L-Love Interest? Uh well. I uh... he he. Ahem. Well I don't really have-
Loona: Hey is that Octavia over there?
Max: Octavia where?! * blushes
Loona: Gotcha.
Millie: AWWW OUR BABY'S BECOMING A MAN!
Blitz: When's the wedding max?
Max: Oh- you! SHUT UP! IDONTLOVEHER,SHEANDIAREJUSTREALYGOODANDBESTCHILDHOODFRIENDS!IMEANSURESHEWASTHEONLYPERSONWHOWASNICETOMEINSCHOOL,BUT SERIOUSLY ITSNOTHINGMORWTHANFRIENDS!
I.M.P: Yep he likes her.
Max: Come on! and what makes you think I like her that way?
Moxxie: Remember the secret santa when you were 5 years old?
FLASHBACK
10 YEARS AGO
A 5 year-old Max had sat by the Christmas the Christmas tree and blushed feeling embarrassed by the gift he got for Octavia as she opened it. When she opened it, she saw a pink bow hairclip.
Octavia: a bow?
Max: ... I saved enough m-money because I thought you would like it...
Octavia: * giggles * Thank you Max.
She then put the bow on and asked how it looked, when Max saw her wearing the bow his. Cheeks blushed even more and he was speechless.
Max: It looks good on you via.
Present day
Moxxie: And every other day you would play, help her with homework, and basically spend every day with her.
Max: Shhhhit...