I want sex to be romantic, and he wants it rough. What should we do?

I am 18 and my husband is 19. We just got married 2 weeks ago, and up until then, neither one of us had ever had sex, any kind, with each other or any one else. So the first time was a bit.. awkward.. since we were both so inexperienced. We tried him on top, but he couldn't seem to go in, so I had to get on top. Since then, he insists I be on top every time....