No, Charlie Sheen didn't drunkenly stumble into a group of vacationers in the City of Light. Instead, writes the redditor who tells the tale, they drunkenly stumbled upon him.
He does appear to be quite intoxicated, though. We're still talking about Charlie Sheen, here.
The poster left everyone hanging on the story of what Charlie Sheen was doing alone and possibly inebriated on the bridge at Pont des Arts—your imagination can probably fill that part in—but did provide these additional photos: