I have a few. The Harley materials, His Needs, Her Needs, Lovebusters, Surviving an Affair. NOT "Just Friends," The Verbally Abusive Relationship, Why Doe He Do That?, Out of the Shadows, Why We Love, Boundaries...
Have read The Five Love Languages, and others. As a premed, I've read about disorders that affect relationships.
I can't say that I've read anything specifically on communication, but many of these cover communication and negotiation. As for boundaries, not much else, but I've read a number of online materials, as well.
