[This is based off a POV by @hptpov]
You had gotten lost in the time subway with Five and one day, you didn't make it on the train and were separated. You took one train after another before you landed in a decent enough timeline where you got out to stay. You quickly build yourself a small life there, having a friend you could stay at and go party with every night.
In the meantime a day hadn't passed where Five wasn't looking for you. He barely slept, using every minute to look for you while you were in the club, partying and having the time of your life. One day, he got out from the subway to look for any signs of you. After searching the whole day, he found a club and decided to get a drink. He sat at the bar when he spotted someone familiar in the crowd - you.