Did I miss the important question, or has it not been asked yet...

is she hot?

This might be a bit harsh, but I also feel like this is the most appropriate.

Yes, advice can help, but in your case I think you simply need to learn life the hard way.

That would depend on one's definition of hot. Beauty is after all in the eye of the beholder.

And are there pics to enhance this debate?

That's what ugly people say.

Dude, if this is in any way a real story, you have some growing up to do. People have more than one friend. and sometimes schedules clash.

If she really is that important to you, that good of a friend and you spend that much time toghether you have no reason to be offended at her spending a little time with someone else.

Unless it's what signalstar said.

That's what ugly people say.

Awwwww he's in love
Well dude i don't know what to tell you when my friends make a mistake like that i make fun of them till i get bored no matter if i'm playing with her or him.

And if you miss her just play with her when she's online don't even mention that "falling out" act like nothing happened if she's quiet or doesn't speak to you like she used to then bring the topic on and both of you figure out what's the problem.

You mad bro?

You should look into cuckolding, I'd feel it's right up your alley.