How do you navigate communication and a relationship if you're a highly sensitive person and the other person isn't?

For starters, I would say that you're on the right track already being in touch with yourself and knowing what you need. If you know that you're a sensitive person, that's information that you can give someone that you're dating or someone you're in relationship with. I think a lot of people get into trouble because they don't know themselves that well, and they don't know what they need, so they don't know what to ask for. If you know what you need, you can talk to a partner and say, “Here are the kinds of communication that work really well for me, and here are things that will really hurt my feelings.” And somebody who is right for you is going to be willing to hear that information and communicate with you in the ways that work the best for you.