I have an acquaintance who, very early in our conversations, mentioned his drinking patterns old vs new. Sort of "I used to have a few beers or a cocktail out but don't drink anymore". On face value, this might just be a simple statement. But my get tells me "Friend of Bill's?"
Trust your gut, OKatz, and then let it go...add it to the pile of already dysfunctional traits that belong to your ex. One more reason to validate your departure.