Without meaning to brag, I feel like I comfortably pass step number 1 (be attractive). I have decent success in the early stages with women, and I flirt a good amount (it's pretty obvious to me now when a girl is initially attracted).

However, in other aspects of my life girls who I've spent time around generally act a lot colder. It's like the more time they spend around me the less attractive I become.

I feel like I am failing in step 2. Guys, what are some things to do/avoid in order to build attractiveness over time?