<human>: So tonight we were at a party and things were going downhill and we've come to the realization that our relationship isn't healthy. We are juniors in high school right now and I thought I was in love but I feel so different about everything. I don't think I'm mature enough for this kind of relationship. She wants to go to the same college but I'm not sure if I want to. It's not that I don't like her...I just don't know what I want. 

She is very fun to hang out with but I always feel like she's my best friend, not my girlfriend. And it hurts so much to put her through this that I don't even want to go through with it. She always tells me how I'm the one so I feel so guilty when I feel like she's not the one for me. I know this is just high school drama but I'm at the hardest decision I've been in my 18 years of my life. I hate seeing her in pain but I'm not happy. 

We were so happy in the first year but then things starting getting progressively worse...I want things to go back to how they were but I'm not confident that they will. She keeps telling me that it will since I want to go to SMU and she wants to go to TCU (colleges about an hour away) but I'm not sure I can keep going on with this. I don't think I'm happy but I don't want to hurt her either. I'm sorry if this is all childish but I just need a non biased person to interpret this situation and help me. I know it's just highs school but this is the hardest thing I've ever gone through.

Can you provide a brief overview of the text?
<bot>: I'm thinking about breaking up with my girlfriend of 1.5 years and I'm not sure if it's the best decision or not.