You’re right. It makes more sense letting his wife think he is effeminate or a homosexual than it would for him to show a healthy sexual interest in his wife. How’d I miss that.
I think the point is that Thinker needs to plant the idea that he is both capable of, and might be, pursuing a sexual interest with anyone BUT his W. I agree with Thinker that going outside the M for that is wrong, but practicing by flirting is good. AND, if Mrs. Thinker suspects he is pursuing someone else, all the better.
I think if he shows a sexual interest, quite frankly, ANY interest more than just a friend/acquaintance, in his W, this would backfire.
Right now, SHE thinks she holds all the control. Thinker pursuing her at this time does nothing to pull that control back in Thinker's corner.