For the people who are like she doesn't have to justify her sexuality to you, yall are going about this the wrong way, he seems to have a question and I think that should be allowed, it's his wife, he's just trying to understand her. Im a lesbian, I I have a threshold when it comes to men I can only be friends with them, I have dated men before and I will say that the love you experience from different genders feels different. It's not all about anatomy although we often Will associate sex/anatomy/love together they are different, I have limited sexual attraction to either sex but I am more willing to do it with women because I am romantically attracted to them. So outside of anatomy, I know that emotions and the way a certain gender makes you feel can make sex feel different. In my experience. So she's probably looking for a different feeling in her sexual exp.