I want my marrige to continue, he does not.?

I found out over New Years that my husband started a ual affair with a woman and now he is in a ual and emotional affair with another woman. He moved out immediately. I want our marriage to continue and figure out where we went wrong. He says there is no way that is going to happen. Is he saying this because he is infatuated with this other woman and sees her as his ticket to everlasting love or should I just call this a crap shoot and move on? I really think with a lot of hard work and soul searching this marriage can be saved. I am just not sure if I should tell him that I will be here when the "newness" of the other woman wears off or kick him to the curb. I really do love him and understand that even though this affair is totally his fault, I had a hand in this too. Please advise.