Search Results: i'm too insecure to be with

we have been dating since 3 weeks, we hv held hands, kissed on the cheeks, etc. i love her like anything.
i know that she loves me too, bt im not sure is it as much as i do. i proposed to her knowing that she had and still has a crush on someone else. she accepted because she liked me too.
Its the first time for both of us to kiss. i asked her if i could kiss her, to which she said no.
when i asked why, she said shez not ready.
my friends of both sex say that its because she thinks that if she kisses a person, then she will be theirs for ever. and she will not be able to forget them ever after a break up.
i asked if this was the reason. to which she didn't say anything, but by her body language n expressions said that what i said was 75% true.
what do i do now. i want to kiss her real bad. she is the love of my life and has been my crush since childhood.

Is it that she is not really in love with me?
or is it that she is insecure about 1. all i want out of the relatnshp is to kiss/sex
or 2. she will be mine forever after she kisses me.
pls help me out.