Need help

well here its a couple days back my father in law messages me asking to hangout so I message him back and say sure I be over in 5min. So I get there and he goes I wanna talk to you about something private at this point I have no clue what he wants to talk to me about. He tells me that since him and my mother in law got a divorce a couple weeks back that he is becoming bisexual. I reply with oh ok I don't have a problem with that and goes on about that he thinks I'm sexy and wants to hook up sometime and he wont say anything to my wife and it be kept between me and him. I didn't know what to say because I don't wanna ruin my marriage or cause drama. So I go maybe because I didn't wanna hurt his feelings because I respect him and everything but I keep wondering what it would be like to hook up with him since I play booth sides and my wife doesn't know. So I keep on having these thoughts in my head about hooking up with him. One thought I have is him sucking my cock and playing with me until we have enough. Second thought is me sucking him and have a great time and just worship each others cocks and everything. But I don't know what to do I'm stuck but wanna hook up with him but don't know what will happen any advice from anyone will be grateful.