Dedue had expected perhaps a little more propriety from a man who had asked to court him, but goes along easily enough when Byleth pulls him into a kiss. He is far more sure and confident in such things than Dedue is-- far more experienced, no doubt-- and there is something reassuring in being able to let the professor take the lead. Another lesson to be mastered.

He has to lean over to reach Byleth's level, and props his weight on one arm to support himself. He isn't sure what to do with the other for the first several moments of the kiss, both due to distraction and inexperience, and eventually settles for placing it on Byleth's waist. That seems... appropriate. Not too dispassionate, but not too forward.

Byleth is... quite forward, however, in how he presses himself against Dedue, the heat of his kisses, the arms wound around his shoulders and neck. In the brief moments between kisses, he finds a moment to say,

"Is this how mercenaries court?"