(((Cil))), this is just awful. What a horrid human being Bubbles is and what a sad, weak man xH is to get sucked in by her. To me it sounds like she was jealous of your life and wanted a piece and your xH was flattered enough to bite.
I'm so sorry this has happened but glad you found out sooner rather than later. Let them have their illicit little affair, in fact it would be interesting to see what would happen if he found out you knew and that you weren't really suprised or bothered!
(((Cil)))
Me - 47 H - 45 D-16 M - 6 years Separated - May 16
Don't leave me behind can't you see me I'm shining... (Years & Years - 'Shine')