I have a male colleague and kind of friend who tries to create a false image of himself but in a really negative way. Examples, 1) he's told me that he's very non-committal about social events, doesn't like organising things and doesn't have any friends, yet he recently arranged a team in a local pub quiz (something which appears to require social skills he says he doesn't have). 2) he goes on about how selfish and self-centred he is, yet a few times has gone out of his way to do really nice and considerate things for others.
Sometimes i think he's just a liar and i'd should really keep my distance from him. But other times i wonder if he has something else going on and i should just accept that's how he is. Any insights into this kind of behaviour?