Darren Criss and Chris Colfer sealed the deal last night with a passionate smooch on Glee.

Their characters, Kurt and Blaine, are singing a duet together on the hit FOX show ... and now we know why. Kurt just wanted to be as close to Blaine as possible. Adorbs!

Show creator Ryan Murphy sure knows how to give fans what they want. Let's hope these two sexy characters take their love further in upcoming episodes.

Talk about a teenage dream!

See Darren and Chris sharing a recent magazine cover together ... after the jump.