He can do this. The way Ivan's responding gives David confidence and he feels secure pressed up against the other man. His hand clutches Ivan's shoulder more tightly as a small sound of want escapes his lips before he presses his lips back against his.

Perhaps he should have more shame, but this is the same man that helped give him a handjob only a few weeks prior. If anything, he feels safer doing this with Ivan than flinging himself at the whim of Beta Colony.