So I had a ex and, when we were togethe (about 1 year ago now) we went to alton towers on a,school trip and they ditched me, they were rude to my friends , and they were controling so we broke up now my best friend (whom I have known half of my life) knows all of this and a couple days ago she texted me saying that my ex likes her showing me proof .so I was like eww nooo and that was that that same day she finds me saying I think i am starting to catch feeling and I told her that I didn't feel comfortable with that and that my ex after we broke up basically at school saying we should get back together and there was a bad argument where she tried to get me to pick between my friends and I cried alot .now a couple of minutes go my friend text me saying she has to tell me something and she tells me she is dating my ex i was like what ever now i am sat here crying and feeling stabbed in the back writing this so idk what to do.