Forbidden Thoughs

I am 35 married and lesbian since I was 15, my wife is 39 and used to be straight and had a daughter who is 17, recently our daughter got a boyfriend who is 17, he visit aften and is a fun guy , the only small problem is that,I found him checking on me or my wife from time to ime, I ignored it since well we are quite hot honestly and he never pushed it more than that, but what I have to admit is that I found it hot to be atraccting him or him being attracted to my wife and him being a guy having no chance,this was al for a time but recently I heard him fucking my wife daughter by accident when they though I was out, and it was a really hot expoerience, since then more stuff cross my mind like he forcing me into sex until I give myself to him, or even him taking my wife in front of me and she saying she enjoy sex with him more than with me, I never though I would like the idea of being cucked by a guy, I talked with my wife a bit about him and she said she found him attractive and was kinda his type of guy, I didnt ask much else but I find her masturbing more often and I am worried to ask, I honestly dont know how we got into this but every day I like more the idea of him taking me or my wife or both.