You need to hire your own lawyer. You can't afford to not have a lawyer. His lawyer cannot ethically represent both of you. You have a long marriage and issues of maintenance (alimony), asset and debt division I am sure exist. The court can award you interim attorney fees if you can prove you do not have an ability to pay your fees and he has the ability. Normally, if one of you can afford to hire an attorney, then both of you can.
If I represent a client, and the other side doesn't have a lawyer, I make it very very clear in my letters who I'm supposed to go to bat for - and it's not you. Talk to a family law attorney to go over all your options before signing something you may latter regret.
Attorneys Markey and Gotzh are right. You have a lot to lose and it would be a mistake to just use his lawyer. With a combined income of $130,000/year, if you own no assets then you most likely have significant debts and obligations. In a few years you will regret it if you do not fight for a fair division of those debts and obligations (including your child's college tuition).
Get your own lawyer. Get your own lawyer. Get your own lawyer.
You are a major alimony candidate, not to mention what you may be entitled to from his retirement plans.
Sign up to receive a 10-part series of useful information and legal advice about the divorce process.