El culo virgen de mi mujer (cuckold)

I've been with my wife for 10 years and although she's given me the green light to do an anal on her, I haven't done it yet. She tells me I should investigate how to do it and be careful because she doesn't want me to hurt her. I'm usually a person with some self-esteem issues and laziness, when we're having sex I've thought about letting someone else with experience break her in and leave her ready so it wouldn't be so hard for me. Other times I wish her previous partners had done that job in the past. Since we were dating, we loved having sex, we even used to skip classes to go have sex at my house or hotels. I also know she cheated on me several times, and during a study trip where I didn't go, she ended up having sex with someone else while I was arguing with her so she wouldn't bother me. After all that and many other things, we finally got married. I always loved how slutty she was and never told her I knew, after that she changed and became an exemplary wife, even though in bed she still is a slut and we've shared some fantasies about infidelity or threesomes (I'd love to make them real). And she's always emphasized that although she wasn't a virgin when we first had sex, she's always preserved her virginity for her anus until I want to do it and be the first one. Honestly, I have no idea if she's really a virgin there or not, maybe someone has already tried or done it but not enough to completely desvirgin her, anyway I think I won't know until she lets me in and honestly I hope it's not hard for me anymore and that someone else has already done it before.