Issues of passion in PR are very common, not strange or mental issues, is the machismo issue. As a man I can go out and sleep with many women, but the woman can not be seen so much as batting her eyes at someone.
This been going on since I can remember and probably dates back to the cavemen.
Let me tell you a story:
Back in the old times when I was growing up, a male could go to a party with his girlfriend, his mother and sisters. Anyone that wanted to dance with ANY of them, had to come to the male of the table to ask permission to ask the ladies. Many a machete fight and gun fight occurred because the other guy did not ask for permission to ask the ladies.
It is machismo and a way of thinking, not mental issues, they know they should not but are too angry to stop themselves.