Angry Wife--Husband denies relationship

For the second time in three months I have found emails (he left them on the computer) he usually NEVER does this, so I think he subconsciously wanted to be caught. Either way, the last set of emails he’s admitted to seeing, talking to this woman regularly because she is helping him. He said I don’t listen to him and he needed someone to listen to him. The emails say I Love You and he’s sending her You Tube songs of Jimmy Durante and stating he can’t wait to see her again and her more about her ‘hopes and dreams…breathtaking’. I am 27 years younger than my husband and this is his 5th marriage. He used to be a politiican and is notorious for cheating. I thought because I am much younger, bright, successful and attractive that his historical behavior would stop. He continues telling me that he and this woman are just friends, but he also told me months ago he doesn’t talk to her anymore because she was ‘crazy’. He’s been in the same city for 38 years, so I don’t understand why if he was in turmoil didn’t turn to a family member or trusted friend instead of a woman he met randomly at a party. I met her, she came to our Christmas party. They were very inappropriate then and asked him to not talk to her anymore, he said OK. Now, he’s telling her he can’t wait to see her again and that he’s sorry that my anger is causing her stress. He actually apologized to her because I’m mad (she didn’t even know). Now he says she’s ‘gone cold’ on him, this was after several scotches and he’s being really nice to me, says he wants to make it work. ADVICE Please…what should I do? I live in his home, no furniture of my own, anything I owned before he slowly gave away stating we didn’t have room for it or that it was junk. The pre-nup guarantees I get nothing, but I’ve been here for 10 years, married for over 5.