Being intimate with someone with DMD

I have recently meet a wonderful guy through some friends, he has DMD he is 19 and about a 120-130 pounds. We are happy in each other company and stuff but I have a problem. He wishes to engage in more amorous behavior, I do as well but I am incredibly afraid of hurting him. I am not used to being with anyone with MD before and I need advice on how to approach it. I would prefer to get advice in chat or email so I don’t break any rules going into detail about our issue. Please reply as soon as you can. Email me as