Breakup?

Astrid

My friend J is thinking about breaking up with her 7 month boyfriend. The reason why is bc her bf’s sister and her friends keep harassing her for being with him. Saying that its her fault for everything going bad in his life. It’s getting out of hand and my friend is a mess rn. Her bf doesn’t defend her or anything. But J knows that if he does break up with him he’ll be in deep depression. Whenever she brings up breaking up with him he starts crying. She doesn’t want him to become too attached. what should she do?