My husband is having an affair...he now wants a divorce..?

my husband of five years is having an emotional and possibly physical affair with a co-worker. i noticed about a month ago changes in his behavior (not wanting or even wanting to sleep in the same bed, guarding his cell phone like mad, change in appearance, staying late at work...) i finally looked at our call log online, which is something i would have never done before, and found a recurring number. I asked him and he admitted to talking to her and said he had feelings for her. He said they never slept together and that it was just a strong emotional connection but he also described it as pionate and to me that implies a physical thing. he is a manager and could be fired for this. We have a 2 year old son and he relies on my husbands income which angers me more that he would jeopardize my son being taken care of. she is also married and my husband said he doesn't know exactly how old she is and says he thinks she has kids. How could he not know these thing if he is so into her? he told me the day he left that he still loved me and didn't want a divorce. I asked him not to speak to her until we could figure things out. i checked the cal log again and they have talked about 20 times since. he told me last night that he isnt in love with me anymore and wants a divorce. SORRY THIS IS SO LONG. My husband is a "Bible thumpin' Christian" and i think its hilarious that he could pull this crap. We have had problems, mostly financial, I work but his paycheck takes care of most things. He says that I am unbearable to live with. I have always given that man anything he wanted. i loved making him happy. Is it pathetic that i still want to make it work? I feel that he still loves me and is only infatuated with this new thing. he has always been selfish and immatur but throwing away his family? his idea of me being such a witch is me telling him he cant spend 40 dollars on golf when we have 50 in the bank. I feel so lost...