i have a problem. i need smos option.

so i’m dating a trans ftm (female to male). we have been dating for 8 months. and there’s this girl he had feelings for. and we both had her blocked bc she almost took him from me. it caused a lot of problems in our relationship. and the girl started adding all my friends on snap. so i logged into my friends snap and went off. later in the conversation we stopped insulting and being rude. we had became friends and i wanted to do it for my bf. and before he had blocked her. she took all my time with him. he fell asleep on ft with her instead of me, he played guitar and piano for her but never played for me. and now that we are friends. everything is going back to how it was before. he fell asleep on ft with her again. and it seems like he’s loosing feelings and not caring again. idk how to fix it without hurting him or me. what do i do now??? helpppp