<human>: My girlfriend and I had been together for about 8 months now. For most part, everything is going well. But my girlfriend's parents and lot of friends seems to not be over her ex yet.

I  try to not let this bother me and prove them that I am good enough for her. But I have only heard about her ex. Her ex was a pathfinder in the army, have been a boxer and kickboxer, is well known and respected in many extreme sport communities, have a very interesting job, and have accomplished a lot in his life. 

I've never met him until yesterday. We were at a party at friend's house when he dropped by. I noticed he was somewhat standoffish and staying away from where most people were. So I went up to him to talk to him to try get him to come and join us. 

I realized it was him when I saw how fit he was and all scars on his arms and around neck from blood play (his fetish) I also was surprise by how tiny he was (I'm 6'4, my girlfriend is 5'11 and the ex is only maybe 5'6 or so) Despite of not wanting to be any part of the fun, he was quite polite and friendly. He then left after talking to someone. 

I have nothing against him, but I just can't help it but feel like I'm just a joke next to him. It is really bothering me. I have a decent job but nothing special or interesting, haven't been out of country, haven't done much, am not anywhere near to being as fit as him, can't dress anywhere nearly as sharp as him, and my hobby mainly revolve around video game.

I'm afraid to bring this up to my girlfriend since she have told me many times she have no interest in going back with her ex and want to be with me. But it is more of a social status and esteem thing to me. I just can't help it. I feel so intimidated by him.

Can you condense the text into a few key points?
<bot>: Met my girlfriend's ex yesterday who turned out to be quite a decent guy. End up feel quite intimidated by him and it is really bothering me.