I met Erika on Market Street in San Francisco, we had just started seeing each other after becoming friends and we were only supposed to get a cup of coffee but touching led to groping which led us to try and find a more private place to make out. 'Employee only' signs indicate that there might not be many people there, especially after six even more so in a building that was undergoing renovations so we went through the chain link barrier and climbed the stairs to the third floor hallway making out the whole way. Erica said "I want you to fuck me" some ripped clothes later as I was fucking her against the wall we both heard jingling keys accompanying footsteps climbing the stairs so we retreated into the ladies room and fount that using the sink for support worked better than a wall for her. Afterward we beat a hasty retreat past the departing worker with the jingling keys.