Romance agents
Lots of good agents handle romance, since romance is a large, lucrative market. Only query agents who are either members of AAR (Association of Artists' Representatives), or adhere to AAR standards. (newer agents have to be in the biz a while before they qualify for AAR membership.) No agent should charge you ANYTHING up front to rep you----they are paid only through commissions on your royalties if/when they sell your ms. If your manuscript doesn't sell, they don't get paid----and that includes copying/postage "fees".
A good place to look for legit agents is a site called Preditors and Editors, as well as through Publishers Marketplace. Be sure to look for an agent that handles romance. (There are lots of them!)