<human>: Can you provide a brief overview of the text?

I've been in this situation for a long time, and I don't think I love my girlfriend anymore. I can't describe it, but I really just don't feel I love her anymore. Whenever I'm with her I don't have the heart to see her cry, and I do feel somewhat happy, but the second she's left my house, or I have left hers, I feel like I don't want to be in this relationship anymore.

She asked me last night if I've been thinking about breaking up, but as the coward I am, I told her that I had not been thinking about it. 

How do I tell her that I don't love her anymore, in a nice way? Help me please reddit.

We both turn 18 in 3 weeks.

We have been together for first 4 months where I broke up, then we found back together and we soon have 1 year anniversary (8. oktober)
<bot>: How do I tell my gf in a very nice way, that I've fallen out of love with her, and that I don't want this relationship anymore?