Not Sure How To Handle This

So I divorced 3 years ago Ex and I get along better apart then married we co parent very well our son. I often ask for her opinion on a lot of things she has dated and has been dating the same guy for a while. Good guy absolutely no animosity towards him at all. He understands that the ex and I get along and no more feelings for each other like that anyways any more. She was picking up my son wand I ran something past her. I told her that the women that I had been dating recently had confessed while out one evening that she had her share of guys. I admit that her skills are good but what I noticed was that when she and I are having sex she insists on having a finger in her mouth. At first it was sexy but after her drunk confession to me I started to think about it. She told me that she has made mistakes when she was married she cheated and begged for forgiveness regretted all the things she did and guys she had sex with. Every thing she said was plural as more then one time. I wondered and her sucking my thumb while riding me got me thinking if she had ever done more then 1 guy at once. That evening I asked and she admitted that on a few occasions she had multiple partners at one time. She went into detail which surprised me and told me that she once did 3 guys at once while married. She was taking some college courses at night community college and had a fling with a guy from her class who then proceeded to share her with a few of his buddies. That’s when she was air tight as she put it. I admit she is fun to have around and we get along but I can’t get the thought out of my mind of her having 3 guys pound the shit out of her. In my mind it’s like dating a porn star. When I asked for my exs advice all she said is we’ll have your fun get tested and don’t get to attached. Makes sense it the attached mart is what gets me. Dating an amateur porn star or what’s sounds like the making of one should make me run away. But the opposite I seem to want more from her. She is down for anything I ask of her. I am wondering if she would do another girl while one takes or joined. I’m trying to hint at it and see what she says. Il post if anything happens