do I need a lawyer?

My husband cheated on me twice.the first time I forgave and moved on,but this second time wont cut it.we have no children,no property,no finances to split,no retirement funds,the only thing is my car which is in both our names but Ive been the one paying it for a year now.I have physical proof of his adultery.do I need to get a lawyer? I can't really afford one,can I do this myself?

A lawyer for what? File for divorce. The grounds used primarily are irreconcilable differences. The courts are uninterested in tying up their time with adultery cases, especially if there is nothing between the two to split, such as lots of money, kids, property. In fact, many judges won't even hear them.

You can find do it yourself divorce kits online, at your local bookstore and even your local library. It's inexpensive, and relatively quick if you don't have possessions to bicker over, as you have mentioned you don't.