Child Support in TN - Help!

Shelby

So a great friend of mine is going through a big battle! His wife has been stepping out on him for 3 years, they have 3 kids (2 of them are likely not his but he fathers them none the less), she is pregnant with another baby now (not his) and is living with a man. They are finally to the point of getting things together for a divorce & custody battle. He tried to work on saving the marriage for a while, and has recently realized there is no hope as she is refusing any fix.

She was always verbally abusive to him. She has been mean to him for years, as his friends we have all seen it. Now of course, she is taking him for child support. He is single, helps his parents get by, and takes care of all 3 kids during his share of the week with no financial support. She, however, is living with this new baby daddy, has quit her job, and gets financial support from her parents.

She has decided to take him for child support. This is going to kill him financially. Is there any hope for him? He tried to save this marriage, has been stomped on by her for years, has been cheated on at least 5 times, and is honestly feeling hopeless. All he has is his daughters (who, like I said , may not even be his) and his job. Is there anything he can do to lessen the amount he is going to have to pay?

She has obviously quit her job to get the upper hand here and be a nasty, mooching from a good man, living off the government type of person. :(