I went through something similar. (Obviously on a much lesser scale) I wanted to get angle wings on my lower back that said forever young under them. It was in memory of a boyfriend that died. My mom was going to let me (I was 15) But I soon met Mike and he threw a fit. (It was/still is the only thing we have ever had a huge argument over) I figured I would wait and if we broke up, I would get it then. We're married now, so I probably won't be getting the tattoo. But, if I hadn't told him who it was for, he never would have thought anything of it.
Again, my situation is on a much smaller scale. And I don't think anyone could stop me if I wanted to do something similar in Mike's honor.