In many ways, your H sounds like mine. When he ended it with the OW/ she ended it with him, he was still VERY attached. He is still attached to her. He said many of the same things that your H said. That he wishes he could turn back time and have never met her, that he is just going to fail at our marriage if he tries again, etc. Since we don't have any children, he said the only reason he came back is to have a roof over his head.
However, I am slowly seeing changes in my H's thinking and actions. He is starting to talk about our future together and things. So just take it slowly. If you are anything like me, you want this junk to just be over with so that you can move on. Sadly, you can't move quickly at all. Hang in there and take it one day at a time. In the meantime, do things you enjoy and focus on yourself more and him less.
Sara
Me-31 H-38 M: 5 yrs T: 7 yrs No kids Went to Prostitutes 10-1-06 Found out about OW 12-24-07 Bomb on EA/PA: 1-2-08 OW ended it with H "for good" 3-8-08 OW is back 4-19-08 H and OW tell me that they are in love 5-19-08 Filed for divorce 6-5-08 Divorced 7-2-08