LOL i neeed hellpp ! cause i dont think im being clear with it?

he cheats on her with me andi really do know and feel its wrong i do personally i never cheated or been with someone who cheats and its with me its a bran new situation it really is..its not that i dont think he wouldnt cheat on me i would just make it to where he dont want to but then again im mostly wrong..what my problem is ppl !! right now as it stands im more phyiscally attracted iam not emotionally set in yet and sometimes when we talk i noticed that we both kinda have the same outlook like we both would hurt eachother the truth is i believe once a cheater ALWAYS a cheater adn there is never a good reason to cheat cause then you should have just broken up with him/her but in any case how do i keep it as a phyiscal appeal and should i ? i mean i know we both like eachother and iam young and i dont want to be in a commiited relationship gimmmee some banginnn advicee ppl <3