My first threesome/cuckold experience [MFM] [cuckold]

Hi all. Hopefully this is the right place to post this. This happened to me last night and I can’t stop thinking about it.

I’m a 30m and have stayed friends with my 30f ex since we broke up a little under a year ago. Every once in a while we still hook up. She has always known that one of my biggest fantasies is to have a threesome, and while she has had a few in the past, she never wanted to have one while we were dating. She did, however, have one soon after we broke up, which is what kind of stirred my interest in being cucked. I know that technically isn’t being cucked, but it felt like it since she clearly had amazing sex with the guy and it was something she always said no to with me.

Anyway, we’ve been hanging out a lot lately and she had mentioned to me that she wanted to have another threesome. Finally she was comfortable enough to do it with me, and I thought I knew the perfect person. My friend Mark was coming home for Thanksgiving. I always knew he was open minded and kind of freaky, so I showed her some pictures of him to see if she was interested. She was. He’s always been that guy that can somehow have girls just approaching him at the bar. Definitely has the reputation of the manwhore in our group.