"For having faith in me." Tarn looks back up at Sixshot, an indecipherable emotion flitting across his optics briefly before they return to the dull closed off gaze.

Tarn dims his optics turning his face into Sixshot's hand in an intimate caress. An argument could be made that if his mouth was uncovered it would have been a kiss. But as it stands the gesture is nothing short of affectionate.