Surprise kiss from the smelter time!
Helex knew where Tarn's mask locks where and he'd reach out to tear off the angular mask off his commander with care. the moment it had come off, being blessed with the sight of the tank's handsomely scarred features, he'd lean in close. crimson optics glinting with mischief as the smelter took the opportunity to press a kiss on the other, softly rumbling and taking a daring lick before backing off soon after.
It wasn't often that his team would take off his mask themselves whatever the reason may be. Call it a once in a blue moon thing. But to even question why Helex was removing his facemask wasn't brought up since it appeared like he was going to get some explanation and not the one he was expecting. His own crimson optics narrowed up at the much larger Decepticon once his face was revealed. Tarn can't tell you why he didn't back off when Helex leaned down to kiss him, perhaps he was surprised--more than surprised. Those optics had slightly dimmed in it and maybe just barely kissed him back. But feeling the other's glossa--! Tarn's systems froze for a moment there at that, embarrassed as ever. "Helex!"