Typical guy likes girl question. But help me plz!?

[Thisguy]

So I am 17 and have this massive crush on this stunning girl. We get along great and we talk every day. We text like once or twice a week and talk throughout the whole day until like 12:00 or 1:00 or when we she goes asleep. We Mainly talk on Facebook, though. Because we have a group chat with a mutual friend of ours. And nearly every night after the friend goes to bed. I just start messaging her one on one until like 1 or even 2 in the morning. Is that a good sign? I always tell her how awesome she is and maybe I shouldn't but I honestly can't help it. And she seems kinda excited to see me because we have a mutual school activity that we do. And she hates it when I tell her that I may not be able to go. I have talked to her on the phone once for about 2 hours also. Are these good signs?

Oh one more thing. She has rejected me twice now. Once last year in about April. And once more in mid November. And yes. I have had a crush on her for a year+ now...

So what do I do?!?!