Am I Overreacting

Hey all, i’m not sure if i’m being dramatic (i’m going to use fake names for this)
I became friends with this girl Sarah we went out for drinks on Saturday, it was all okay till a guy came over. Tom, he’s Sarah’s best friend’s ex boyfriend. But Sarah’s best friend is also my cousin.

Anyways previously Sarah and Tom kissed at a party (Sarah had a boyfriend of 2 years), Tom and her were flirting constantly but i began talking to Tom and he was really nice.

Sarah’s friend Kate had joined us too. It was all okay then i asked Tom will he be going to another pub he said yes so all of us head there.

We got in but the flirting kept getting worse and i asked Sarah what’s going on, and she said she’s not doing anything wrong. I dance with Tom and just talk. Then the pub closes we all sit outside, Sarah won’t talk to me or Kate and she leaves with Tom but Tom comes back. As i’m heading home Sarah messages, she calls me the n word (i’m a white irish woman) and says i left her, i wasn’t talking to her etc i was but she was talking to everyone but me and Kate.

The next day Tom asked me to hangout with him and his friends in a beer garden, i did. It was fun i enjoyed myself and made new friends. Tom’s friends had to go home as they don’t live in town (this is where it gets weird), me and Tom bump into two guys from the night before we know and they said Sarah’s ex boyfriend is hanging out with Kate and are on the quay.

We all walk there to see because i can’t believe it, they were having intercourse in public. I was disgusted and concerned. I quickly realised she was heavily intoxicated and she blacked out. We got her home soon after. Sarah can’t find out about this as the night before she messaged me saying she can’t get over this so called ex even tho she has a boyfriend and was flirting with Tom too.