Natsu hadn't been seen in weeks, and Gray was seriously starting to worry. If that heat was supposed to get worse and Natsu had already looked terrible after only the second day, then he was probably even unable to move that much. Gray stood up and walked away from the table he, Natsu, Erza, Happy, and Lucy always sat at. The guild was abnormally quiet without the pyromaniac around. Truth be told, it bothered Gray. He worried for his friend, even if they always fought.
He walked out of the guild hall. He would check on Natsu, just to make sure he hadn't done anything that he would regret later on. He would also offer his help one last time, and if Natsu turned him down once again, then he wouldn't argue. He couldn't force the dragon-slayer to accept his help. Natsu was just like that. He either needed the help or he didn't want anyone to think he was too weak to handle the situation. It was one of the many things Gray loved about the dragon's personality. He also always had a smile on his face, no matter how much pain he was suffering from. Gray figured it was to keep everyone else strong, and it definitely helped.
*****************************
Gray was not prepared for what he saw once he opened the door to Natsu's bedroom. The dragon was on his bed, lying on his back. His entire body was flushed a bright red, and his eyes were glazed and hooded with lust. What made Gray completely stop in his tracks, however, was the slight rock of his hips as he fucked himself with a dildo and the way his body was spread out so sensually, his face buried in the crook of one of his arms. He looked...hot. Gray felt his own cock stir at the moans Natsu released. The dragon had yet to notice his presence, and Gray knew he probably wouldn't unless he announced himself. Gray sprung into action, stalking over to Natsu's heat-wracked body and pulling the dildo out. Natsu stilled, and he removed his arm, olive eyes meeting blue.
"Gray...I-" Natsu's eyes were wide, and he opened and closed his mouth, trying to find the right words to say.
"Shh...It's fine, Natsu. You knew your heat would get this bad, so why didn't you let me help?" Gray asked, eyes soft as he stared into the dragon's.
"I...just didn't want anyone to see how weak I am." Natsu told him. He couldn't tell Gray that his words had hurt him, but he wasn't exactly lying.
Gray placed a soothing hand on Natsu's burning cheek, and the fire wizard watched him in confusion. "Natsu, you're the strongest person I know, both mentally and physically. I'll never think you're weak." He told Natsu with a soft voice.
Natsu was at a loss for words as the ice mage leaned down to capture his lips in a passionate kiss. It didn't take long, however, for Natsu to regain his senses and begin to kiss him back. Gray's lips were freezing, and Natsu loved it. Gray climbed onto the bed, his body hovering over the dragon's and his hands on each side of his head. He swooped back down, engulfing those fiery lips into another kiss. This kiss wasn't like the last. It was bruising and rough, filled with need.
"Gray, please..." Natsu moaned as Gray inserted three of his fingers into the dragon's leaking hole.
"It's okay...I know." Gray whispered, calming him.
The ice-make wizard kept himself up with one hand as he thrusted the other in and out of the fire user slowly. He watched Natsu's face the whole time. The expressions the dragon made were incredibly sexy, and Gray could barely stop himself from ravaging the beautiful creature under him.
He didn't want this to end quickly. He would take his time to completely unravel Natsu, because this may very well be the only time Gray could ever do this to the dragon-slayer.