Marriage is the legal union between two people who saw themselves, loved themselves and wish to commit themselves together as husband and wife in order to start up their own new family. This is exactly what I have known marriage to be of from day one, it was never said to be a union between two people of the same age or people with different age variations. This proves that literally marriage have nothing to do with someone's age, so in essence two people who are of the same age can get married together and those of different age can also get married and live together as husband and wife. All that matters is that both the couples found love between themselves and wish to live out their lives together as husband and wife with the possibility of having their own kids. So, to answer your question, I can definitely marry someone who is older than myself.