Source from http://www.esogoldah.com/news/56--how-to-get-married-with-your-lover-in-elder-scrolls-online
Hi, all. Today i will simple introduce how to get married with your lover in ESO if you still do not know this system.
First, you need a copy of the Imperial Edition of the game. Then, you will have a copy of the Pledge of Mara item that you can choose one player (Female or Male) to marry, regardless of the edition the other player owns.
What's place you can marry?
Some important places you can choose, there is a Shrine to Mara icon in the map.
Aldmeri Dominion: Vulkhel Guard in Auridon & Elden Root in Grahtwood
Daggerfall Covenant: Daggerfall in Glenumbra & Wayrest in Stormhaven
Ebonheart Pact: Davon's Watch in Stonefalls & Mournhold in Deshaan
How to marry?
Put your "Pledge of Mara" in the items hotbar, then facing your future wife or husband and kneeling down to marry.
AdvantageAfter married, you and your lover will get a wedding ring "Ring of Mara", which increase the additional experience bouns.
Summary
Only use Pledge of Mara one time in ESO, so you do not worry about polygamy or polyandry, once you marry with one player, you can not divorce. Another the golden wedding, silver wedding and diamond wedding decided by your character’s level, not your account level.
Ok, below is the eso marriage video you can see, very happiness.