<human>: Well this may seem like a bit of a rant, but I'll try to not make it such. I have been dating this girl for probably close to 18 months now. She broke up with me a while ago and we were apart for about 6 months but she then wanted to get back together. We've now been back together for 7 months.

 I'm thinking that she is more of an introvert than an extrovert. At school, she will never really approach me; it'll be me approaching her. She never seems to keep the conversation flowing either, it's usually me doing most of the talking. Even when she's at my house she might not converse or just show any signs of interest. Sometimes she may be as chirpy as a bird, but more often than not. Also most of the text messages she send me seem blunt, but again, not always.

 Another thing is that we both have this mutual friend, but I am somewhat annoyed at him at the moment. When I told her she seems to take a large interest on that topic, and keep asking questions like why and stuff like that. She also seems to be able to speak to him more freely then me. I'm just not quite sure how to interpret all of it.

Condense the text into a few key points
<bot>: Girlfriend seems to not be interested at times and seems to be able to communicate with other people better. Not sure on what to do.