he was sweet in his gestures? sometimes when we talk he'll say
like he used to do this or that... or like there was one time, what
would happen...
that kind of conversation?
Maybe he is a bragger? Don't be surprised to find many guys out
there are actually braggers too. Many people actually find the need
to brag in order to get themselves a job, and that is really a sad
thing to do.
I realised this recently also.....so many guys bragging about
their job, their position in their company, their financial status,
their NS "war"-near death experiences, their glorious career in
their previous jobs, their high education and intellectual
capacity, their super influential friends/buddies.....blah blah
blah.....
Why does guys need to brag about all this? I don't blame them if
they needed to do all that to impress us and show us that they are
actually in control and confident about themselves. But I don't
tolerate LIAR and LIARS.
My heart would probably goes out more towards the guy who is
able to show me his vulnerable side sometimes and let me feel like
he needed me at his side sometimes. Too much bragging only will
ended up driving everyone away from him, including me. 
Perhaps his bragging is the real reason why all his past
relationships doesn't works out? It's quite a common social issues
nowadays that are placing many relationships at risks. 