I read your posts...LOL...Then I start singing "Lola" shortly there after..LOL.
As far as the sex thing....seem like you had a confidence shaker from the STBX. Of course playing it off is easier said than done. In my honest opinion about the subject...the bitchier the woman..the better the bedroom time...lol. Just my experiences! Don't you have a boy toy also....I think that more than speaks for your performance ability in bed.
In the end, it was probably your STBX's feelings of inadequacy in bed that was affecting his libido...and he just wanted to throw his junk at you instead of dealing with it himself...that line sounds real bad...lol.