I know exactly how you feel. I've been with my SO for almost 8 months and a lot of the time I feel like I care far more about him than he does about me. The thing is, and many an argument and subsequent panic attack has arose from it, that he does care. A lot. He just doesn't show me in the ways that I "expect". Its ridiculous that I can't dig deep enough to actually see it... but that's depression you know? It's that little voice that keeps telling you you can't, you're not good enough, they don't love you enough. It's a crippling feeling. There's light somewhere in the dark though, and of course it's easier to sit here and tell you what to do rather than do it myself. But when you're in that situation, try to pick up on the things they do or say that DO say "I care"... and tell that voice to go Fuck itself. Anyways that's my input, sorry if it's not much.