Nick barely remembered the night before

Nick barely remembered the night before as she woke up. She remembered meeting a guy named Ron and intending to test out a one night stand on him but everything got hazy after a while. She didn't even remember returning to the room.
She got up to get ready and noticed polaroids on the dresser. There were pictures of Megan and the guy Ron in many explicit sexual positions. Nick felt as if he had been cheated on but realized he was the Megan in the shots. Nick was annoyed that he didn't remember the experience then he noticed a ring on his hand. What is this? The next polaroid showed the two of them at an all night wedding chappel. Nick dropped the photos in shock. What had he done?
Just then Ron opened the door to the room entering with breakfast and a paper......