Calling it "playing cupid" is part of the problem, it makes it sound like a fun game. But you're messing with real people's feelings, not characters in a story. The best move now is to step back completely and let them figure it out. Trying to smooth things over usually just adds more pressure. Have you given them some space yet?
Hey, @susan488's advice to step back might just make things worse. Sometimes a little nudge in the right direction can actually fix the awkward vibe. What if you tried to lighten the mood with a joke?