who's fault?

About a month ago I was talking to my mom about my negative sides of charachter. I needed to clarify that for my MBA admission essay and decided that the person who knows me the best is my mom.
So, I called her and she named several my negative traits. Honestly I found an excuse for all of them except one. She told me that I make men fall in love with me and then leave them. At the beginning I did not know what to answer. It felt like she was completely right.
But today it daunted to me why I do so. Usually when men want to attract a woman they do their best. Rhey try to be creative, interesting. They try to impress girls and look good for her. It works.
Girls get attracted. They date, enjoy each other..Then men get tired of constant thinking, they realise that they can't be perfect all the time. They want to be themselves finally, is something wrong with that?
So, they relax and start to show their real personalities...It can be different. Somebody can be cheap, somebody can be boring - it does not really matters. They relax more and more with every date...Initial flowers, attention, dinners, rommance - everything slowly disapperes. They reduce the amount of their charm and attraction from day to day. And they think that if girl does not complain it is ok. They think they already got her and there is no need to make any further attempts.
At some point, girls get tired. They feel that men used them, that men lied to them...In my case that point comes really early. And I always feel deceived. Even more...usually I am able to keep track on development of relationships and be smart enough to desappear before he has fell in love.
Sometimes I see than on the 2nd date, which becomes the last one. Usually they do not understand what happened or pretend that they did not. They think that they can fix everything. They think that it is my freakiness...
So, mom, whose fault is that? Who is more guilty the man who lied from the beginning and pretend the person who he isn't or me who happened not to fall in love with a real person I saw?


PS
And if I am not in love how can I be with somebody I am not telling the whole life but even several years? How I can lie in the same bed with him and see all his negative and positive traits so clearly? How can I be comfortable with the person I am not really attracted by? How can I have children from the man I do not love? How it is possible to love children from the man I do not love?