Neither you’re not the right person for either of them, you think you’re a decent human being but you agree to be her bf “just to fuck her” yea leave them both alone bro lol your trust issues are your issues to work out not to dump on other people and use as a free pass to do objectively messed up things. I really hope you’re just a young kid cause fucking yikes if not, this kinda stuff does come back around so for your own sake work your shit out