<human>: Could you distill the essence of the text into 1-3 sentences?

Hi Reddit, thanks for "listening" and helping me out on my situation. Like I have posted in my title, I am an 18 year old male college freshman, my girlfriend is 19, and also a college freshman. Our relationship will be seven months old come the end of this month. I have been great friends with her for years prior to this relationship. I know her family well, she knows mine well too, and this makes it even harder.

What ended my previous relationship is starting to end my current relationship. I have slowly started to lose feelings for my now-girlfriend. Mind you, she is an awesome girl and very beautiful too. She always cares about my well-being, and is so, so sweet. I don't know why, but as the days grow, the feelings just get dimmer and dimmer from me. I see more and more differences between us. It seems as if her love for me grows, while my love for her dies. It saddens me to look back and see the memories we shared. The more I talk to other people, the more I realize that I am still very young, too young for such a commitment. I was a fool to get into a relationship. 

I just do not know what to do. I am unhappy on most days. She texts and calls, and I just simply reply. I used to love seeing her and just talking her, but now, it all feels like a chore to me. She is probably starting to realize what is going with me. She sometimes half-jokingly says that I don't love her anymore. Verbally, I disagree, but mentally, I know that it is true and she is right. 

I just don't know what to do. I am so afraid of breaking her heart and losing our cherished memories together, yet at the same time, I am constantly being reminded that I am not happy.  Some have recommended me to slowly ease out of her life, while some said to just "hang on." I just want to meet different women, and it makes me feel like the biggest asshole ever. I feel like such a horrible, horrible person. Reddit, what should I do?
<bot>: My girlfriend and I loved each other, but now I have lost feelings for her. I am afraid of breaking her heart, but at the same time, I am unhappy. What should I do?