I think it should be a easy way to find out if a man has had a vasectomy as well as for a woman whose tubes tied....I dated a guy who use to have sex with me like he was trying to get me pregnant I was truly ☺ happy☺ then he just out the blue told me one day he had a vasectomy I was too turned off. His high sex drive was because he was on his way to jail, and now its been 2 years he back out and no I just cannot allow this sterile man to have sex with me after doing time in jail becoz I'm in a relationship and it's the thought of knowing he's not going to get me pregnant even though vasectomies are 99.9% effective for sterility I can't do it.....now I'm just hoping my fiancé hasn't had a vasectomy.