First of all, a reality check: judging from the language you used to describe this chick (a "girl on myspace you've had a crush on for 5 years"), my guess is you don't really know dick about her. There are millions of variables that go into making relationships successful or unsuccessful, and there's no possible way you could know whether it would even work between the two of you--that's what dating is for. When you maintain a long-term crush like this, you run a serious risk of idealizing the person to the point where there's no way she could compete with the fantasy you've built up in your mind, making you disappointed and bitter when you find out she's just another person rather than the angelic ray of light from heaven you built her up to be. Quit putting so much pressure on the interaction and just go have fun with her
That said, I have one final piece of wisdom to share as a guy who used to have a world view very similar to yours. Having experienced both sides of the equation, I would happily trade every hookup, fuck buddy, one night stand, literally every sexual exploit in my history in a heartbeat if I could go back in time and NOT fuck it up with the only woman I have ever loved.
Being in a committed relationship is only boring if you make it boring. Think about that.
Your boy,
870