<human>: So my girlfriend and I have been dating for almost 4 months now. And approximately 1 1/2 months ago I started second guessing our relationship. Thinking things like: Do I really like her, is she really all that great, what about this other girl...  so I talked to her and explained the situation and after some sadness we decided to take a break. 

It was supposed to be 1 week but after a day I couldn't handle it and we got back together. Everything has been wonderful and I lover her, up until about 1 week ago. I started second guessing things again... and also that past two times we have hung out there have been moments when it feels like she is trying to distance herself from me. I talked to her about both of these issues and she said she wouldn't do it again. Although I don't know what I can do about the second guessing issue. 

It puts a lot of stress on me and that is not good especially when my senior year is starting real soon. I think I know a few of the things that cause me to second guess my relationship. My girlfriend lives about 50 minutes away from me and we are both very busy people so it makes it difficult to hang out. Also my best friend (17/f) lives in the same town as me so I see her often and I am slightly attracted to her. I think she is very pretty and nice, now I am not necessarily romantically attracted to her but in a way that still makes me feel like I am almost cheating on my girlfriend. Also this fall I will see her even less then I already do because I do cross country and she swims. I really have to work hard this year because running is going to help me get into and pay for college so I wont have much extra time outside of that.

Provide a brief overview of the text.
<bot>: I really like my girlfriend but I am second guessing our whole relationship for the second time. I do not know what to do or how to handle it.