Seducing His Woman

Several years ago when I was in a relationship with a very beautiful woman black men attempted to seduce my girlfriend right in front of me on more than one occasion. While the advances didn't lead to her going to bed with any of them (we weren't in a cuckold relationship) their moves were bold, smooth and quite daring. I still wonder if their advances had any effect on her, I know they left me feeling weak, a bit embarassed and later turned on as I was tongue-tied in the moment and flustered.

Have any black men here successfully seduced a taken woman right under her man's nose?