I'm sorry he's trying to engage you...I wouldn't put ANYTHING negative in writing.
Next time I would say 'lol I don't hate you Mr. Luv- have fun with the kids, I gotta run!'
Just to show him that you're fine, you have a life, you won't engage him, you won't take the bait and he doesn't deserve your time or to know your feelings.
Hang in there and do something nice for yourself tonight.
Me: 35|WAW: 38|D: 6yo | http://tinyurl.com/2dxx7m6 Feb 2006, left, came back in two weeks Aug 2006, left again Apr 2007, filed for divorce Dec 2007, reunited Mar 2010, moved out, filed again