I think in any relationship, whether depression is an issue or not, there are times that you wonder if you're good enough, or if he could find someone better. It's natural for any girl to think these things. Just remember, though, that he IS with you, and chooses to be with you. If you weren't good enough, why would he stay?
open up to him. Tell him these insecurities, I'm sure he will understand. Or if he doesn't understand, maybe it will tell him that you need reassuring sometimes. Sometimes just getting it out there, and getting reassurance that "Yes, you're good enough, and I want you" is all you need. I have moments that I tell my boyfriend what I'm really thinking. Sometimes the thoughts when spoken out loud sound irrational, and his reaction is enough to make me think I was silly for even worrying.
As for the depression, look into help for it. It can change things so much for the better.
Let us know how things go. We'd love to hear how things get resolved!
31 yr old female-dx with Crohn's in '97 after emergency resection and appendectomy, 2nd resection '05
Currently on Humira, Prilosec, Effexor, Seroquel, Calcium, Vit D, sublingual B12; phenergan, ultram, clonazepam as needed