The cast of Glee never cease to amaze us! While on their last stop of the Glee Live in Concert tour in Dublin, Ireland ... cast members Heather Morris and Naya Rivera celebrated with a kiss.

But outdoing them in the lip-locking department ... Darren Criss and Chris Colfer. These two are such cuties, and we'll admit, even though they were just messing around, the chemistry seems to be there.

Now that Darren has been made an official cast member on Glee, we can't wait to see what develops next season!