Advice forum

My ex and I were together for 6 years and have two children. We got married in 2015 and soon after I found out he'd stolen money from my bank account over a period of 4 months totalling £1000. Due to planning our wedding, I lost track of my personal finances and didn't find out til after the wedding. I was understandably cross! His mum advised him to pay all his wage in to my account so I could manage his money.

The house was mine before we got together. The car was in my name and I paid for it. The bills etc were all in my name. The credit card, loan and overdraft used to pay for the wedding was in my name.
He paid £250 a month to me initially when he moved in. I paid for all of the household bills. After he got promoted, he then paid £800 a month to me. During this time I had taken a pay cut so I could raise our daughters in a part time job.
After I had found out about the stolen money, it was paid back. We both agreed to make it work but he refused to go to marriage counselling with me. Due to previous issues in our relationship., I had no trust in him, and I would be very argumentative with him (through frustration). I'm paying for divorce as he's refusing to. He says he's struggling financially. He's wanting money off of me, as he believes he has rights. He says if I could agree to give him money, he won't petition the divorce stating I've been adulterous (as I had begun a new relatioship soon after the separation).

I am still paying off the wedding and still have another year to go.

I explained that I just want a divorce. I don't want anything from him with regards to money, except child maintenance (which he pays already), even though I am still paying off the wedding and he was the one who walked out.

Does he have any rights? Should I give him money? My dad has advised I get him done for fraus, for stealing. Obviously I don't want that though.

What are your thoughts, please?