Confused!!

Sarah • 33 mum of my beautiful 12yr and 4yr old boys and my 👼🏻 baby No:3 due may 2020

So I have always been attracted to girls but I love men my man and me have been together for nearly 7 years and I’m pregnant with my 3rd baby and it makes me wiled especially for girls so I end up watching lesbian porn my man and I had a conversation a couple of days ago and he said if I ever want med to play out my fantasy and go with a girl he would be fine with it the thing is I’m sooooo jealous I couldn’t let him be involved he understands and says he won’t stand in my way I guess I wouldn’t be so jealous if I was body confident and didn’t think he preferred other women to me all the time so after reading all of that do you girls think maybe I should try chatting to a girl online maybe let him be involved where would I even do this? And would I feel like I’m cheating? I’m lost advice is needed!!