I feel its a great thing if everyone involved is enjoying it. my wife and i have had great times. It kind of came up the same way as yours . when she made me sure liked the thought of another guy , i just made it happen one night i was at a stag party and brought a friend home that i asked if he wanted to fuck her. she was surprised and we all had a great time. then it happened more with him and others. I'm glad you are havening good time to. you both are for sure. i always liked the sex after she got fucked good and she told me what she liked most.