from what i understand about Pre-selection is like you saying you are wanted by other females.

(scold me if you want) but there is still girls that talks about sincerity when comes to relationship , so how do pre-selection works?

Remember "show, don't tell." If you say "yeah well I'm basically being stalked by like 20 women, they just can't keep their hands off me" then you just sound like a twat.

The idea of preselection is SHOW through stories and actions, that you have, and have had, a variety of both friendly and sexual relationships with women, so that she is comfortable with you, knowing that you understand how to interact with women, and women are comfortable and even attracted to you.

The EASIEST way to do this, that I always do, is as follows. Any time you tell a story, or say that a friend showed you something, or taught you something, make sure you use a female name or say your ex girlfriend. It's easy to do, and if you just mention it in passing, she'll never remember or attach much significance to the name, but she will understand that you clearly do hang around women.

The other obvious ways are to arrive at clubs with women, either in a mixed group or, as Adam Lyons suggests, with 5 guys and 100 fucking chicks.

To be honest I don't see doing either of these things as a "risk." I'm not sure what you mean about being "honest in a relationship." Obviously you don't have to lie and make up 47 different ex girfriends and 20 female friends that don't exist just to impress her, if that's what you mean...