For girls, it's different. Besides the situations already mentioned, there are loads more which include but are not limited to: the obvious break-up, fighting with a friend or family member, fearful situations, losing something important, getting a bad grade (tears are a perfectly natural way of raising any test score or paper), feeling homesick, as well as crying out of pure happiness, during a wedding ceremony, or even a sappy commercial. Then, there are my own situations for crying, which may seem bizarre to some. While I could theoretically list some of these, I don't feel I have the time. Plus, most of these are public events, so you probably already have enough examples in your head.
But back onto the topic of man tears, they downright frighten me. Luckily, seeing a dude give into the waterworks is a rare occasion, and I would like it to stay that way. Some girls may think it's sweet when their boyfriend breaks down, showing feelings and emotion. Gross. I'd rather see my boyfriend repeatedly blow chunks. I remember when I made a friend cry on my basketball court one summer, after telling him that he reminded me of Kyle from Real World Chicago. I'm pretty sure our friendship ended right around then. Sadly, that was not the only time I saw him shedding the big wet ones. Maybe that's biased of me to say. Please don't tell me I'm being unfair though, or else I may cry.