Hey now, boys get heartbroken, too. I'm the oldest of 5, and 3 of them are boys, and they've had their hearts trounced on FAR harder than me or my sister have dealt with. My brother's first girlfriend (they dated from soph year of HS through graduation) was set to go to college with him and their friend, she had a reason to be at college before normal orientation so he went with her, she started the organization that caused her to be there early, he joined too, it looked rosy. Then before normal orientation started she quit the organization, quit that college, and quit him. She didn't even tell him why. She didn't even tell him. She had her parents talk with our mom and stepdad. And they either didn't know why or weren't telling.
It nearly destroyed him. (to this day I wonder if there was something baby-related happening...and that's another thing girls have control of that can have tremendous effects on a boy's heart, mind, and even soul...but he doesn't know)
Girls aren't the only ones who get their hearts broken.