We all have backslides. Just pick up and go on from here. I find myself backsliding all the time when H seems 'normal'. But then I realize and remember all the things he has done in the past. I also remember this may all be an act to gain sympathy. Your H is no victim. He created this mess for everyone.
Hang in there.
Me: 46 FWS: 36 Married and Divorced 4/07, Pregnant 7/07,False R 7/07 Baby Girl born 3/08 Kicked him out because OW: 7/08 5/10 He realized what he had and lost. Moved home! REMARRIED 3/14/11!!