Does he know ?

When I was outed by my youngest Daughter in 2017 she promised me faithfully that she would keep my secret.She is in a same sex Marriage so she was a safe bet. Forward to 2019 my eldest Daughter got married to a real nice guy with a a great sense of humour... Lately he has been making some dubious remarks and telling jokes about CD,ers I'm now wondering did she break her promise or tell her Sister in confidence who in turn passed it on to her Husband. " The two Sisters are and always have been very close".Or is it my imagination  running amok  ?  ' footnote' : Shortly are being outed I exited the Closet and told my Wife....