[solved] Help finding a book

I hope someone can help me find this one.  H is in Vegas with a business partner, they go to the bar and he sees the h. They get drinking and wind up getting drunk married.  She leaves in the morning without leaving him any of her information.  He wakes up and finds the marriage certificate and is really mad.  He gets a PI to finally track her down.  He wants her to sign the divorce papers.  He goes to where she is living in a bad neighborhood and a run down apartment.  When she answers the door he sees that she is pregnant. He moves her into a better place and the end of it is he falls in love with her.

OMG I am so bad at this LOL.  I hope someone can help