Wife's diaphragm

This happened years ago but I still think and wonder about it. My wife was 45 years old and we were going through a rough patch. She had gone back to college to finish a degree, and had lined up an out-of-state summer internship as part of her degree program. She was to go away for the entire summer to work. Before leaving, she secretly got herself fitted for a diaphragm. Now... I had already had a vasectomy years before, so obviously there was no need for a diaphragm on my account. When I discovered what she had done, she responded by getting angry that I had snooped. No explanation. Just got angry and stomped off. At the end of the summer, she returned with many gifts from some guy she met over the summer. Expensive electronics. Silky lingerie. She suddenly wanted to reconcile with me. Insisted that she didn't fuck the guy. Admitted she modeled the lingerie. Said it was the least she could do to thank him. I have a hard time believing that was all she did. Seems to me, modeling lingerie would lead to him sporting a raging erection. And I just can't imagine her ignoring that and leaving him with a bad case of blue balls. She never admitted anything more. I'm pretty sure though that she fucked his brains out repeatedly and that is one of the main reasons that he gave her those nice rewards.