Your wife with another guy's cum

There's a lot of discussion about a wife's first blowjob or first penetration, especially when the husband watches. Something that isn't talked about as much, but can also generate controversy, is the first time a husband watches his wife come into contact with another guy's cum.

For those who have had this experience, what was it like watching your wife with another guy's cum, where did he cum, and what did you feel at that moment?
This is a very intense experience, my wife had been seeing a guy for a few months, when I persuaded them to let me watch, it was the first time for me and the first time she was taking him without a condom, they started off with kissing and that was intense for me, with jealousy a major emotion, she then was riding him cowgirl style and came within a few minutes, he did not, so he flipped her on her back and went in her missionary style, after a few minutes, he came hard moaning at this time she raised her hips high and pulled a pillow under her hips to keep the cum inside her and he rolled off.

Later he tried to make her lick it off but she turned away from doing that