u/lostintime887

I’m curious to how things get initiated, I have a son who turned 18 a few months ago and I catch him staring at my wife, his stepmom from time to time. Now my wife is the only mom he’s ever known and she legally adopted him when he was 14. I know I shouldn’t think the things I do but I’m really curious if there is something I can do to see if they would be willing to build their relationship into something sexual. The thought really excites me, how do I know if my wife would be interested in him? She wears minimal clothes at home eve when he is around. She is comfortable with him seeing her like this. Other than catching him looking a few times how could I be sure he’d be willing to fuck her? Any advice is appreciated, maybe this should be kept as a fantasy of mine?