I'm a 19 year old female who just started college, and I decided to come to the reddit community for anonymity and privacy's sake.

I recently made a new friend, lets call her M, along with a completely new friend group. I genuinely thought M was a really nice person, up until a few days ago. During class, I noticed her only befriending boys and blatantly ignoring girls (except me occasionally), but didn't think much of it. The main problem started when I tried to befriend one of the guys she was consistently talking to, let's call him S.

I started a conversation with S, asking him about his music tastes and sport preferences, and we turned out to have a lot in common, so we started chatting away. At one point after we stopped talking, I attempted to restart a conversation, but M held me back, saying that I was annoying him and he was clearly pissed. I'm not great at reading social cues so I believed her, because what reason did I have not to?

Anyways, this repeated multiple times, with her not letting me engage with S or his friends, and I was starting to get a little annoyed with how she was able to randomly ask him anything and interrupt his conversations with me or anybody else but I wasn't allowed to even breathe in his way.

Funny thing was, he only replied to her questions in short sentences or monotones, while she went on and on about herself, making backhanded statements to show me down (for example, "oh she's really good at studies, but she yells a lot and thats why she can't explain well" - which is absolutley NOT true, I'm quite the introvert). I let it slide, assuming she just was interested in S and wanted to eliminate any competition (I do not have any plans of dating btw, but she does not know that).

Either way, at one point, she asked him "I presume you're not much of a talker?" , to which S replied, "I am, but you're too talkative, which is kinda annoying." You'd think that would've deterred M, but NOPE. She went on to agree with him, only to claim that I was even more of a chatterbox etc etc (I was completely zoned out and her saying my name brought me back to attention).

While S and I chatted about sports and rap, she interrupted us asking him whether he liked guns, saying how "she was not like the other girls who like dolls and makeup, cos she loved guns and fighting games." He gave an awkward response (imo) and sort of separated himself from the conversation after that.

The next day, M insisted he hand over his phone so she could play the video game he was playing, because she had mastered it in middle school. At that point, our friend group was around too, which is when the main problem started to take place. He awkwardly brushed her off, clearly annoyed that she was interrupting his game (mind you, I cannot read social cues but his annoyance was quite obvious). I was going to ignore it as usual but this time, she kept bugging him to give her the phone and it was kind of getting on my nerves too, so I snapped at her to leave him alone because he's obviously not going to give it to her.

At that point she burst into tears, claiming I was being unnecessarily mean and jealous, saying I should understand what she must be going through since she had almost no friends throughout high school.

Now, I feel terrible about my actions and seriously need some advice.