If a man doesn't know what love is by the time he hits his late 20's or early 30s, than he has some serious soul searchin to do. Or needs to grow up and phase out his immaturity.
I'm 25, and I know perfectly what love is. I've never gone around just throwing out the word to every girl I've ever dated. I saved it, until I knew it was right. And I know PLENTY of guys who are the same.
You're like 29 right? Can you honestly say you haven't found/had love? Especially something strong enough to over look a girlfriend losing a boob to cancer?
If a guy doesn't have the heart to stay with a supposed loved one through a time of need like that, than he deserves to die a lonely bitter old man.