I think I am fairly well respected and liked at work but there's one colleague I just lose it over. I don't fancy him or anything so don't know what it is but everytime I'm talking to him I seem to get verbal diarrhea and can't stop talking shite at great length. I'm pretty sure after every time we speak he must go away and think wtf. I joke around him too and after a few times I then wonder if I went too far. Wtf is wrong with me?!