Firstly, with all due respect Mam, it is very heart breaking when someone on whom you trust the most break your trust.
Secondly, yes, you can file cases under dowry act as well as 498a also.
Thirdly, and the adultery which you have been talking about can’t put him behind the bars, but yes you can use that as the ground of divorce, and it would be a very strong case for you to get success if you want to go for the divorce.
Fourthly, you should also ask for heavy alimony as he has almost ruined your life.
Rest you can contact me through Kanoon for further clearance on any point.
God Bless You...!