From your crush, or from someone you have fallen deep in love with... Fantasizing, and daydreaming, and these two words come out and crash down on everything. The moment you learn the love is forbidden, and can no longer be valid. It's the final words to say "move on".

You have no idea...

never had that problem

This is why you first find them on Facebook, make sure they're single, get them drunk and have some fun before they end up with a girlfriend.

That way you get yours and you have the moral high ground.

Seems like you're coming from a personal space..

I always just assume my crushes are straight to avoid heartbreak

Omg this happened so many times. Lol but like lethal I just assume all of them are straight. It still dosnt take away from the feeling of dissapointement you get right away.

This has happened a lot oh well

I have broken girls up before who have said "I have a boyfriend" so that I could date them.

The one I had most success breaking up her and her bf actually didn't want to date me so I gave up on her. A year later she started crushing hard on me and I had moved on