I understand, however your thread title is "my boyfriend demoralizes me". It sounds like an unhealthy situation, regardless. When your partner does things that then make you feel depressed, that is not a relationship that promotes positive mental health. A good, healthy relationship should never make one depressed.

I am very happy in my relationship all the time. Sure, we have our moments where we've disagreed and/or have had an argument, but I never feel depressed as a result of how he treats me, and I never feel demoralized.