Cassius groaned loudly as Marcus came, his boyfriend's body suddenly becoming impossibly tight. He leaned down to kiss him as the warmth of his release coated his hand and both of their stomachs. He knew he wouldn't be able to make it much longer, but he held on a bit more, wearing himself out within Marc's body, reaching his peak and half crying out as he shivered, coming hard.
It took him a moment to come down, still within his lover's body for a few more moments before pulling out and pulling him up on the counter into a sitting position.
Cass kissed him tenderly then, finally finding a moment of relaxation in the afterglow.