<human>: Could you distill the essence of the text into 1-3 sentences?

I have two best friends, we've been always very close to each other in high school, we're in the same class, study together, etc.

This year one of them started a relationship, and it has been hell, he is completely manipulated by her, we started to fight a lot mainly because her girlfriend tries to be inside our friendship.

I've tried to be comprehensive with his relationship, but everyone has his limits, I've won his girlfriend hate because I didn't tolerated two situations:

1) We were in a group of four, my friend, his girlfriend, me and a random guy doing a school project, and all my ideas were completely ignored because her girlfriend didn't like them and (of course), my friend was supporting her.

Finally, they both made the project alone and after we presented it she told me I didn't help at all... I was furious and reacted shouting her she didn't listen any of my ideas and the project was bullshit, just because they didn't let me and the random guy to help.

2) My friend was talking to his girlfriend when I suddenly appear and this happens.
Me: Hey let's buy something to eat
GF: Get out he's with me now!
Me: I'm not talking to you
Him: I don't know I'm kind of bussy now
Me: Ok, maybe later
The same day, I came back later and the same shit happened again.
Me: Hey dude, you know yesterday I was...
GF: I already told you he didn't wants to talk, he's with me get out!
Me: Are u kidding?? He can speak by himself, stop talking like you were himself, I'm tired of your shit, wtf

I don't know if I've reacted well in this situations, I can't speak to my friend anymore because her girlfriend is always at his side.

Now, like I said before his girlfriend hates me, and we're fighting everyday because we're in the same class. It's like we were competing for my friend's attention.
<bot>: My best friend has a girlfriend now, she hates me and manipulates him, I don't know how to react.