I was rewatching The One With the Cop (Episode 16 of Season 5) and I realized that Monica and Chandler spent the night and the entire day together. They probably didn’t have to go to work that day, so they finished the crossword, went to bed, probably used the measuring tape Rachel was asking for the next day and had amazing sex repeatedly. The following morning they woke up together, went to the coffeehouse and spent most of the rest of that day in Chandler’s apartment. Monica even cooked there (Chandler was really cute holding a slice of cucumber while Monica was chopping vegetables). In between the cooking and their friends entering the apartment for several reasons, they sat in the barcaloungers, Monica probably doing another crossward and Chander trying to figure out a rubik’s cube, just enjoying being in each other’s presence. Chandler left his apartment for a few minutes to help Ross with his new couch, but he was back with Monica quickly. In the afternoon they went to Monica’s apartment and hang out with their friends. I just find this extremely cute. Their relationship had recently been revealed, they had confessed their love to each other and they spent as much time as possible together.