a couple love questions?

I'm a person who's honest and always does what i believe in. I have a couple questions on what's right. There's only been 1 guy on my mind. I don't know what to do. One, he has a gf. Is it wrong? He's not some new guy by the way, he and i go way back, way before her. I can't help it. And two, I'm starting to wonder if I should just forget it for a while, maybe it's better off this way. I really do. Even though there is no1 else and I'll be lonely. When I was 11, I decided that I would never be w a guy for the wrong reasons. If I could tell that the guy was wrong or something was wrong, or i was desperate etc I wouldn't. I would say no if I had to, and that's hard for me. I love him, so do I still or would it be for the wrong reasons even though i love him? What do i follow? I'm at odds. He's in my heart no matter what so I'm just not sure if I keep going like that.

Respect the fact that he has a girlfriend. Be patient. Everything happens for a reason. If you're meant to be with him, you will be, but now is obviously not the time. Wonderful things happen when you least expect it. Just live your life and stop worrying about some boy. You won't end up alone. He's not the only one. You'll be just fine honey.