Vin leant over to kiss Callum again, before he unscrewed the jar and dipped his finger in.

"Are you sure about this?" He asked Callum. "We don't have to tonight, you know."

Callum nodded impatiently.

Vin felt Callum spread his legs slightly beneath his weight, and he shifted to one side. He quickly took Callum's tip in his mouth and began sucking gently, as he slowly pushed in.

Callum grunted quietly as Vin's finger slid fully inside him and started to withdraw.

Vin trailed his tongue over Callum's shaft as he continued to work his finger in and out. He scooped up more Vaseline, and added a second finger, then a third, until he was scissoring all three in and out of Callum with increasing speed.

The smaller boy was bucking his hips against Vin's hand, forcing Vin's fingers deeper inside him and his length further into Vin's mouth.

"Come on, Vinny." Callum whined after several minutes of teasing.

"What?" Asked Vin innocently. He scooped more Vaseline and smeared it over his own length.

Callum let out a soft growl of impatience.

Vin settled his weight over Callum's body and parted Callum's legs with his own.

Callum pulled him in for a deep kiss as Vin began to slowly push in.

He heard Callum's hiss of pain and stopped moving.

"Keep going," Callum gasped, wriggling his hips a little. "Don't stop, Vin."

Vin continued pushing in, pausing whenever he heard Callum gasp in pain. He slowly drew back when he was halfway in, and pushed in again, a little harder.

Callum moaned as Vin began to slowly move his hips, pushing in a little deeper each time.

Vin wrapped his hand around Callum's shaft and pumped up and down in time with his thrusts, driving any remaining pain from Callum's mind.

By the time Vin was fully sheathed inside of him, Callum was shivering, his body covered with sweat.

Vin leant down and kissed Callum tenderly, before he withdrew and slammed back in to the hilt. Callum's cry was swallowed in Vin's mouth as he continued to move faster. He felt the smaller boy's chest heaving against his own as he drew deep breaths, moaning with pleasure.

Callum's fingers gripped Vin's slippery shoulders tightly, rocking his hips against Vin's hard thrusts.