<human>: So, here's the story.
I really like a girl in my university. We've been in the same study group for about 2 years. And, to be honest, I barely noticed her until recently. We didn't really talk before. We weren't friends, just acquaintances. Well, anyway, I tried to change it. We started chatting during breaks between the classes. I thought things were going well. Yesterday I asked her (via FB) if she would like to drink a cup of coffee with me. I know for a fact that she's been doing some kind of 	medical checkup for her part-time job. Well, she answered that because of that time-consuming checkup she didn't want to go anywhere. To me it seems like a major red-flag. That she isn't interested in me, just as simple as that. However, I'm really inexperienced and decided to ask perhaps more experienced folks.

**About me:** I'm well-looking (at least people tell me so, maybe they lie to me, haha) and have no particular issues that might stand out. I don't have any kind of experience in dating, however. I had some pretty rough issues in my family and was forced to help them out rather that seeking relationships with women. Now it's all good, but the lack of experience still makes things difficult to understand.

**About her:** she seems a little bit socially awkward. I'm not sure if she had a boyfriend before. She never initiates anything. I was always the first one to talk to her, to write to her, etc. She responds in a very friendly manner (but, perhaps, she is just being polite). She smiles a lot when we talk (which, by the way, is the reason I let my guard down and was surprised by her answer). All in all, during our offline conversations she seemed friendly and even somehow interested in me.

So, the question is: should I try to ask her out again? Later? We are going to see each other in the university anyway. Or maybe I should just move on?

Can you summarize the given text in a few sentences?
<bot>: I like a girl, she seemed to be interested in me as well (a little bit, at the very least), but rejected my offer for a lunch together/coffee. Should I try second time?