My exwife ALWAYS cheated, it was her way. When we first got together, she was still very young, she loved to flirt with other men right in front of me. At first it used to get me jealous, but also I used to get a hard on just imagining her fucking them. After around 6 months of us being together, I took her to Magaluf for 2 weeks. On the plane she was very ...... and was flirting with another couple, who turned out to be long term swing partners after the holiday, but that's another story. We found a nudist beach and I asked if she would like to try it, what a stupid question. Within 15 secs of getting on the beach she was completely naked with every guy on the beach looking at her. I had to lie face down as it was having a far to obvious effect on me and at 8" long with a good girth it wasn't easy to hide. I was pretending to read a book and as a guy or guys would pass I whispered "here's another one" and she would open her legs enough for them to see the fleshy insides of her pussy hole. Some she would kneel on all fours, legs apart and pretend to straighten her towel. This give a very clear view of all private areas with her firm tits still in place.
Basically we found the best place to flirt and even have a number of guys openly wanking while watching her, was on the nude beaches. So as for her cheating there was never any need as she knew I got off on other guys hitting on her and some she would go all the way with and we would fuck later as she related every thing she did. It wasn't until later in the marriage she started keeping her meets a secret, even though I usually found out about them. There are a number of rendezvous that I missed and the last one was the last straw