He is just not that into her...
Or her being married (and possibly knowing of your controlling nature via your wife) is a deal breaker for him.
40 yo straight female
Married in the eyes of the government to Butch since 2001...
Murf my monogamous second husband has been with me since May of 2012.
In a V relationship with an average 50/50 split of time between my two husbands.