My girlfriend complains a lot (about life, school) because of her depression and anxiety. At the beginning of our relationship, I could tolerate it no matter what and it was completely fine, but as time went on, I started to get more and more annoyed by it. 

Every time she’d complain to me about something, it would immediately ruin my mood. I would start feeling sad and angry and overall just pissy.

I would love to be the kind and supporting boyfriend with nothing but sweet words to tell her and comfort her, but the moment she tells me her problems, most of which are her fault, I get sad. 