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

Just like the title says, I am fairly certain my boyfriend is depressed. I don't really know what to do or how to help. I've been a pretty negative person in the past and work hard to try and stay positive and not let things get me down.

My boyfriend is a very negative person and I believe that his parents have had a heavy effect on that with him because they believe the world is out to get them and they are very paranoid. Every little thing makes his dad say that nothing is going right and he is going through "all this shit". In return, if something can't be found or one little thing goes wrong, my boyfriend says "Why does this shit always happen to me?" I get so frustrated and say it's not happening just to you, you just don't remember the spot you put it. Things don't just walk away. We live in a small place. 

When he gets in one of those moods where nothing can go right, I start to feel anxious. This scenario happened just last night and happens at least twice a week. Last night we had a talk and my boyfriend mentioned that he feels alone. I don't really know what to do. I'm not sure how to help him not feel alone. I have a lot of mood swings and he is the rational one in the relationship if we have an argument or discussion. I always get defensive, get hysterical, calm down and see what I've been doing and calm down. 

I have a lot of stuff going on with my family that has been going on the last few months and working a ton of overtime that I don't really have any time to myself or time to spend with my boyfriend. I'm worried that maybe my issues are overtaking the relationship and I don't want that to happen. I want him to know that I will try to always listen and be there. But I just don't know what else to do from this point on.
<bot>: Pretty sure my boyfriend is depressed, said that he feels alone with me. How do I show him he isn't alone?