<human>: Give me the gist of the text in a nutshell

Using a throwaway because I'm worried she'll see this. As the title states, I've been in this relationship for about a 6 months now. By now, I realize what I thought was love was actually just crazy teenage hormones. I want to end the relationship for a number of reasons(age gap, long-distance relationships don't really work for me, she's very clingy and demands to talk all the time), but I can't figure out how for one reason: This girl is OBSESSED with me. She thinks the world of me, has told me sometimes that I'm the only one who can cheer her up, and I fear for her mental state if I leave her. I already know she isn't emotionally stable and blames herself for almost everything and beats herself up over it, and I feel like me leaving would make her blame herself and go into depression. It's also an awkward situation because I promised I'd never lie to her, and yet, I've been lying for months telling her I loved her. How do I end this without ruining her mentally?
<bot>: long-distance girlfriend's obsessed with me, I want to break up, don't know how without sending her into depression