In Florida can we have one lawyer represent both of us on the divorce?

You should not have one lawyer represent both parties. A lawyer cannot represent both parties as they probably have opposite goals on at least some issues. Your spouse’s attorney should not be counted on to protect your interests. That lawyer is getting paid to fight for your spouses rights not yours. However, if the parties can come to an agreement on some or all issues, then the one who does not have an attorney can talk with the other parties’ lawyer to negotiate and/or conclude the matter. (ie without having to retain a lawyer)