Peter didn't slow down, didn't stop, not with Bobby's hands on him encouraging him to keep going, to fill him up the way he wanted. And so he kept up that same slow but insistent press of his hips, driving himself into Bobby bit by bit.
He laughed then, surprised and warm, shaking his shoulders when Bobby told him what it felt like. "Nothing quite so big, I promise." He teased, pressing his mouth to Bobby's again, a grill still tugging at the corners of his mouth. Entirely caught up in Bobby and the heat of him, and the warmth of his body, and his laughter, all of it was exactly what he wanted.
That slow even pressure kept up all the while until his hips met Bobby's, panting Peter pressed his forehead to Bobby's for just a moment as he stilled, for the sake of them both letting Bobby take a moment with it. "Fuck you feel so good," He kissed Bobby again, heated and eager, but holding himself still for the moment. His heart racing.
Peter rolled his hips slowly before too long, like he could get even deeper than he already was. And then started pulling back again, his pace still slow, still taking his time with Bobby.