Why do men I just meet keep asking about my sex life or make comments about my lack of a sex life?

I consider myself a bit of a prude because I neither dress nor behave suggestively. However, about 50% of males I become acquainted with (on a platonic, social level, not actual dating situation) ask me about my sex life even when we have only met each other for the first time or first few times.

Example of questions asked before I feel we are comfortable enough as “close friends” :

- Do you like sex?
– What do you think of the attitudes towards sex for women in your country?
– When was the last time you had sex
– How often do you masturbate?
– What kind of men do you like?

I have remained friends with them and no harm has come to me – in fact later on we can become quite good friends.

I wonder if it’s because they got clued in to :

- me being a young widow and single for 13 years.
– my attraction to gay men.

If I have been doing something wrong I would like to know. If I have not been doing something wrong and those questions are asked of me as just some kind of survey then I can be put more at ease.