You're Bucky's girlfriend. Loki has a massive crush on you since he knows how crazy you can be

tony threw a party and of course you came. Since duhhh, it's a party. The party quiet down and it's now 2 am. You guys are on the couch, you're sitting between bucky and loki. You roll You're eyes back making you're eyes white. The avengers look horrified but suddenly you growl and open you're mouth, blood streaming down you're mouth. The avengers eyes widen and loki grins widely. Bucky looks concern

Bucky: "babe? Baby don't do that..."

loki rolls his eyes at bucky protectiveness and grins to you

Loki: "I can't wait to team up with you one day and kill together."

the avengers turn to loki with wide eyes and Bucky looks angry