My H said that same thing to me months ago (about wanting to get a divorce so that we could really start over; so he could see what he was really missing (me). he thinks (and well I gave him that impression by acting so needy and pursuing him) that I'd be waiting for him.
He was in fact still communicating with the OW at the time. He was keeping me at bay to see if things would work out with OW. Instead, things ended with the OW (she had another bf at the time) and she then became pregnant by her bf, now fiance. Nice that she is off to have a nice little family life of her own after she ruined mine.
Listen to what these people on here are telling you.
They know their stuff.
Good luck!
M: 32 H: 34 S:5 D: 3 D: 1 Together 11 years Married 7 Bomb: PA/EA 8/13/09 (for 1 year on and off) ILYBINILWY: 08/09
"The end of suffering happens with the end of wanting." -Laura Munson