Second Chance?

[DamnthatDavid]

What if you miss a good thing? Do you still have a second chance?

Life is confusing. And I just going to pose some questions, maybe ya'll can help me. Maybe not. We will see.

I've never been that good at the entire relationship scene. Well, some of you remember the She-Bitch rant... point'n'case.

Anyways, this girl is currently dating this airforce pilot guy (who I believe is a dick).
But in social situations, she would come up to me and start chatting.
She wants to go shooting with me, running with me (when I ask) wants the same type of Aviator sunglasses that I have, and possibly just hang out with me.

Now, would a girl hook up with a another guy if the one guy she was interested in was to fucked up in head and heart to notice her? i.e. Me?

Would the girl still be interested in me while going out with another guy?

and

Should I try to nab her from this guy in the last 3 weeks before I get shipped off to basic training for 2months? Or just let the dream go?

(got times wrong)