Hello everybody.
I'm new here, I googled online therapy and found this form. I hope to find some advise here, and make new friends with new people.
First let me introduce myself, Male, 27 years old, 6.1ft tall . I owe a construction company.
I grew up in a very strict conservative christian family, at the age of 19 I just threw the idea of religion out of my mind. I define myself as an atheist at the age of 23.
I was morbidly obese my entire life, two years ago I decided to make a change, I went from 390lbs to 185lbs.
I never had a relationship my whole life, never had sex or even touched a woman. And I'm waiting to have sex until marriage.
I met few girls with sexual past. And I have problem with this idea and determined to overcome it.
My feelings is as the followings:

1- Feeling disgust as another man touched my girl.
2- Feeling unfair that I'm waiting until marriage, and the other girl is not.

I'm trying to analyse these feelings.

First I'm trying to put myself in the girl shoes, if I were her and had the same circumstances would I had sex before marriage?
Well there is an incident, when I was 18 I was working in another city and one night my roommates brought a prostitute to our apartment. And offered me to .... you know. She was very cute, but I felt disgusting and said no I would not make god angry. Then I left them and spent the night at the company's office.

After I threw religion out of my mind the same incident happened, and I still felt disgusted. At that point I really didn't know why was it my obesity (feeling insecure about taking my cloth off in front of another woman or what) But sex was like something very very sacred to me. And I really don't know why. Was it growing in a very conservative family?
I really don't know.

One of the main reason I decided to follow a healthy life style was to have a relationship with a girl. I have more attention now from women. And I feel proud about my achievement and making a change in my life.

Now I feel bad about judging a woman by her past, in the same time I'm not willing to commit to something serious if she is not virgin like me.
Please help, how to overcome the idea of any girl sexual past?
Thanks in advance