<human>: Broke up with my ex-gf of two years a few months back, and I'm finally starting to think about dating again. Problem is, I suck at pursuing anything because I over-think how any given girl is feeling and convince myself to not be that pushy guy who just ends up making her feel uncomfortable.

Basically, I start talking to a girl, get contact information, and then completely flake out, because I don't want to always initiate contact. I understand that there's an element of a chase here, but I cut it off pretty soon because I don't want to be pushy. I wouldn't classify myself as a creep at all. I'm pretty charming and can hold conversation with girls easily, but I guess I'm still too much of a "nice guy"? I don't know.

Example: Messaged a girl on facebook about going to a concert who I had struck up a friendship with a few weeks before. Meet up at concert with friends, have a good time, she asks for my phone # to invite me to other shows, I ask for hers a few days later, and she takes a while to message it to me. She's always been super-friendly and has laughed at my jokes and stuff, and I've caught her looking at me a few times. However, she hasn't invited me to anything else. Should I keep asking or call it off?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Should I just keep acting interested until a negative sign presents itself, or do what I have been doing, which is stop when there aren't as many positive signs happening?