I had sex with a woman in front of her fiancé

I have to start off the story by saying I was 19 when this happened, I’m 28 now but it’s one of those things that I’ve never told anyone ever and I want to get some opinions, but anyways one day I was on tinder swiping when I matched with someone, she was older than me o believe she was 32 if I remember correctly but we were hitting it off right from the get go. She mentioned that she was in an open relationship but I just kind of brushed it off and never thought about again but after about 2 days of talking she invited me over, we had pretty much already predetermined that we were gonna have sex so when I got there we sat down in the living room turned on Netflix and pretty much started getting intimate immediately… about 10 mins in she started giving me head, then the bedroom door swung open and out comes her fiancé I stood up in shock but she told me to sit back down and he’s okay with it… he didn’t say anything just went into the kitchen and poured a cup of water while she continued to give me head, he then sat on the couch right across from us and just started watching… we started having sex right in front of him he didn’t say a word just watched and when we were finished I came in her mouth and he came over and started tongue kissing her that was my queue to get tf outta there. She texted me again that night saying she wanted to do that again but I blocked her number.