mobile user btw
(also this is my first post where i actually write so bear with me)

B-bitch that is in the title
Me-me
T1 &amp; T2- good friends that are twins
F-other good friend

I have 3 scenes here
Think of that wannabe rich kid that shows off his Hollister clothes. (no offense to hollister)

The first one was at my birthday party 2 weeks ago. I had it at Round One with bowling and karaoke. B was just being straight-up rude: bowling gutters for everyone, hitting people in the neck as a "joke", and went so far to throw his drink at T1 but missed and hit F and got his sweatshirt stained. And then B complains about having these fingerprints on his hollister shirt. He started fights during the party as well. I did say some things to him, like stop bullying everyone you dumbie and fuck off tho

Fast forward to a few hours later, at my house cause I wanted to have a slepover with my friends. B says to me that he didnt want anyone touching his stuff so I told T1,T2, and F and theywere perfectly fine with that. We wanted to play super smash ultimate but B didnt even want to talk to us. All he did was hook up his xbox into my monitor, and played minecraft the whole time. The only time he went out was to try to talk, but then a fight happened. He started saying a girl (that was pretty much a little sister to me) was super annoying and childish. I told him to f off but then the argument gets to a point) that we told him to stop braggin about his Hollister and B said stuff about influencing the whole school to wear Hollister which isnt true cuz my cousin got me hollister but whatever

I kinda feel like Im not a good friend cause i didnt try to mend bridges or anything I just let it be
And.. now the final part
If you arrive before school starts, you sit in the gym on the bleachers, and i was sitting close to B (note that Im on a soccer team outside of school and made and the school soccer and volleyball team. B made the soccer team by the slimmest chance and got cut for volleyball) I was asking my other friend if he wanted to come to my volleyball game and this happened:

B- So you think youre better than us cause you made the volleyball team? 
Me- No, Im just asking my friend if he wants to see my game.
B- Ya know, your just lazy you dont run at all in soccer your a goalie and you dont do anything in volleyball (note that im kind of overweight 5'4 150 lbs)
Me- Just because you can do lacrosse doesnt mean that whatever I do isnt healthy
B- yeah but you arent moving at all youre just standing there.
And then I called him a dick and walked away 
I then see him talking to T1 afterschool asks if I was "still hung up on calling me lazy" to which i flipped him off and walked away
T1, T2, and some other friends also told me that hes been talking bad about me, although I did do the same to him
So, strangers of Reddit, should I mend bridges cause Im TA or is B TA?