<human>: Can you condense the text into a few key points?

I [26M] like this girl [25F]. We've been together for about a year now. She introduced me to many new things and even helped me to lessen the effect of my ongoing depression. Many people around me have mentioned how much more happy I seemed after being together with her!

But since a few weeks (maybe months?) I feel like I love her less and less. She is still great; but more like a friend and not much more to me. I understand that the 'honeymoon' period is a thing; but that period ended within the first few weeks for me.

She's great at taking care of me, and we fit quite well when it comes to interests. The only real 'issue' I have is that I find it difficult to take care of her mental issues. But I accept that she has her imperfections and I can work with that. 

I just don't feel the need to take her out anymore, surprise her with presents, give her kisses, and all that sort of stuff. I just want to be alone more. This is why I feel like I fell out of love...

Now I don't know whether this is a normal thing to happen; to "fall out of love" but maybe "fall in love again"? Or could it simply be part of my depression (which I'm monitoring closely through daily journals and psych visits)? Or is it simply that she isn't my match and find another person for that spark?

Any similar situations or any form of insight are appreciated! This issue is a huge burden for me!
<bot>: I fell out of love with my girlfriend and don't have a good reason for this. Is this normal? Is this depression? Will I fall in love again/Deal with it/or should I Break up?