Without meetring you beenee, it's hard to guage what the problem is, if indeed there is one! It may be that you are a little 'full-on' in your approach, which can intimidate people. Why not try a different approach - instead of telling your conversational partner about yourself, why not ask him about himself? People love to talk about themselves, but try not to make into an inquisition. Fish around for something he is obviously interested in, and follow that line of conversation, but don't fake interest, people spot it a mile away. Be genuinely interested, and give a little information, and if you are interested, smile, and be friendly, but not too friendly. Try that, and see how it goes. Good luck.