maybe this guy your with is depressed also? depressed people can't stand other depressed people, i know cause me and my one friend both have depression problems and we can barely be togeather for 5 minutes of talking and we start fighting,

alot of people might think anyone whos depressed is just faking it since there are so many depressed people nowadays, but all those people really are depressed, one big reason is lonelyness, most people in america are just lonely, either because they have no friends, or just no good friends,
and alot of people also get depressed(like you said) because they don't think they're good at anything, but they just havint found what they are good at, because most of everyone is to busy trying to have a good time and do something entertaining, that's why people are so lazy to do anything, because they believe everything is about having a good time,
of course i'm not saying any of that is whats going on with you, just saying it incase it might help you.