Even if this is a game a lot of people play to escape from reality there still is the occasional lesson to be learned from it. This time: Don't try to marry some stranger you met on the internet and you don't really know that well just to be married.
If you plan a wedding in RL and your partner doesn't show up on the day you also can't marry someone else for free a few years later. At least you only payed a few €/$/whatever for this lesson, there are others that did not get it so cheap.
Else if you are really motivated to give it a try then contact the support at least compared to normal users on the forum they might be able to help you since if they are motivated to they are basically gods in this game world and they tend to answer prayers more common than the RL ones.