Ultraman

It's not she "needs" to do something, it's what type of person she actually is. She doesn't need to "change" herself in order to "fit" me. Of course, when days pass by, we influence each other and accept each other more and more and will become more "alike". If ones don't feel the love inside, no matter now often you renew the vow won't help the relationship (too 表面 la).