Hey everyone, just a quick video for unlocking this acheivement. All you really need to do is wear an amulet of Mara, which you can buy in the temple of Mara in Riften or find randomly, then talk to any of the eligible partners. When you talk with them, they'll say "wanna get married?" , say yes, then talk to the priest in Riften to set up the ceremony. It takes place the next day, and viola, married. Hope the video helps!