<human>: Can you give me the gist of the text in a nutshell?

We've been dating for 6 months now and she is beautiful smart and funny so this has caught me a little out of depth, keep in mind this is my first real relationship. She cares for me a lot and often expresses how much she loves me, the problem is i don't really feel anything for her any more. Whenever a text from her pops up on my screen i don't get excited or smile, i let it sit there for an hour or so until i remember i have to reply. I know this should be pretty straight forward and i should end it but unfortunately for her she's a child who got stuck in the middle of a messy divorce (happened 8 years ago) and she feels neither of her parents loved her or cared for her. This is now coming up to haunt her in the form of depressive periods. Considering she's currently struggling with the feeling that no one ever loved her or was there for her, i feel like me breaking up with her could tip her over the edge and pose a threat to her mental health. I feel it's cruel on both of us to keep this going but i fear for her mental health. Any advice on how to handle this would be greatly appreciated.
<bot>: I feel i've lost feelings for my girlfriend but she's currently struggling with feeling unloved/uncared for because of her parents messy divorce that happened years ago. i feel like breaking this off may tip her over in to depression