You're at Blake's party, but Blake was busy having fun with the other, so that he didnt really realize your existence.

and on the other side, there was you, having fun and talking to a random man at the party, not flirting thought, just chit chat some random stuff.

while you were talking and have fun with the random guy, from a far Blake was watching you feeling really jealous, he knows that you both are just a friends, but his jealousy keeps flowing inside him.