Mainstreet After Hours has become our favorite spot in Lakeville when we want to meet with a few friends and leave the kids at  home. The beer and wine selections are broad enough to match most people's interests, and the "small plates" menu has both appetizers and light meals that are just enough. It's one of the gems in a chain restaurant dominated suburb.
The only thing that stops me from rating it a 5 is that the service is sometimes a bit slow, even though the place is small and never too busy. Even so, I highly recommend it for couples that need a little "us" time or to meet a small group of friends.
(There's even a TV, so I can keep one eye on the game while listening intently to my wife!)