Likeing 3 guys. My friend needs advice.

Jenna
so my friend and I were talking today and she was telling me about her dilemma about her love life. She has a bf but her ex got in between and she likes him too. Then there's a guy a school who she has a crush for. Her bf and her ex made her an ultimatum saying that she has to chose one of them but she doesn't know and she likes the guy at school so she's caught in the middle of it. I gave her advice, saying she should make sure she knows who she wants to be with and makes sure she has no feelings for the other guys. But I told her about this forum and she asked me to ask u guys for advice. So what advice would u give her?