Clarke: Wells - he was totally fine with the relationship you have with Clarke, just as long as she doesn't break your heart.
Octavia: Bellamy - He's still protective of Octavia, no matter that your his best friend but likes the idea of you dating her rather than some perv
Raven: Finn - despite the fact she was his ex, he had no problem with you two together.
Lexa: Clarke - She doesn't trust her still and has to ignore the tiniest feelings she has for her, but supports the relationship as long as your safe and protected.