whats with the FL's friend and the blonde guy?

I believe the friend and blonde guy had a drunk one night stand (we didn’t see much of it) and now he seems interested in her.

blonde guy (i think) wants to get close to fl friend for an ulterior motive of getting in between her and ml’s relationship

oh i thought it was a girl that just looked similar bc her hair/eye color was different

Yes, it was different girl not her friend. But they looked similar.

Naa it was her lookalike. bro is interested in her because she keeps ignoring him(yeah typical)

I thought he was actually interested in her, didn't he not know they were friends immediately?

im not sure if his really genuine, from what i remember he knows fl friend is close with fl — though based off the other replies maybe i got confused with the fl friend and someone who looks similar