Help please?

Can someone please help me, I'm in this relationship I was forced Into that I don't want to be in it all started because my cousins boyfriend had a brother and ig she wanted me to date him I don't want to be in this relationship at all because I'm starting a new school and I want a new boyfriend from my school my current "boyfriend" doesn't even talk to me tbh I talk to my cousins boyfriend more than she does please help