Who can afford to jerk off into condoms? I'd kill my husband if I caught him doing that. 'Course, he does it a lot (and, shush, I do it with him a lot, too -- it's just that his sex drive is what one man-many wives was meant for).
Another possibility is that MAFOMINY's one night stand was one of those guys who's all about conquest and quantity. He's only interested in strange, and you're not strange anymore. Don't take it personally.