My approach to match-making is simple -- you create a no-pressure opportunity for people to meet, preferably at a party, in a crowd or the like. You certainly don't give either party a clue what you're up to. You just make the introductions all the way around the room, then stand back and wait.
If you're lucky, they'll connect.
If they don't, no one is the wiser and no one feels obligated.
Seems I'm two for two lately:
(Now if I could only make it work for myself...)