Danny was wandering off to the edge of the pool where the crowd had thinned out, to the park area that was pretty deserted and there he saw Terry and Jin talking. Well, Terry sitting in Jin's lap caressing and kissing him.
Danny quickly found a spot to hide where he could watch. This was it! He didn't expect Terry to go for Jin, or for Jin to even be up for that sort of thing, but he grinned. He knew there'd be no going back for Terry after this at least until Jin maneuvered himself to present his ass to Terry. Damn it, his brother still thought of himself as the weak nerd. "What are you doing, bro?" Danny hissed under his breath. "You're the big dog now, you don't take it, you give it." That testosterone pump he had given his brother must not have kicked in yet. Then something seemed to come over Jin's face and he sat back down, Danny grinned. "There ya go, bro."
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'What am I doing?' Jin thought to himself. This felt wrong. Not wanting to fuck Terry, that felt like something he wouldn't mind, him presenting his ass was wrong. He looked down, saw his beefy arms and strong chest, then looked over to the lean svelte Terry. With a shock he realized he was the big one here. Something inside him clicked and he sat back down.
"No." He said, firmly, making Terry blink and pout.
"No? But you said.."
Jin interrupted. "Changed my mind. If you want to fuck, you're going to be taking it." He flexed his arms and folded his hands behind his head, unconsciously making his arms as big as he could manage. "Well?"
Terry looked back towards the pool in the distance then to Jin in front of him. No way was he going to be the bottom. But Jin wasn't the nerd he was expecting, he was.. hot. Those muscles, that cocky grin, his arms, and the way his cock stood up proudly in front of him, just waiting, already glistening with pre.
Terry bit his lip. "Fine, but this stays between us."
Jin reached out and grabbed Terry by the hips, pulling him up so he straddled Jin's lap, knees on the bench. He lowered himself down, Jin guiding his cock to Terry's virgin hole. The twink gasped as he felt the head push inside of him. He had been missing something these last couple of days and this was it. It felt so right to have something up inside of him that he lowered himself down on the slick shaft with a contented sigh. Terry knew in that moment he wasn't just having gay thoughts, he was gay. And a bottom. Any thoughts he had of fucking Jin went right out of his head. He was made to ride dicks.
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Danny grinned as he watched, his hand down his own shorts where his cock was rock hard watching his brother fuck his former jock enemy. There was something karmic about it. He was both proud of his brother for suddenly growing a spine, and gleeful that Terry was finally paying for what he did.
He felt dirty watching, but there was no way he could go back to the pool and not be obviously tenting his shorts. He could look away and not think about it, but he knew it was happening right behind him. He watched Terry sliding up and down his big bro's cock, the same slutty eager look Sasha used to wear when riding dick on his face. Jin was in charge though, setting the pace with his hands firm on Terry's waist, arm muscles straining as he helped him up and down.
All three of them came about the same time. Jin didn't let Terry escape, blowing his load inside the half-Asian twink. Terry's splattered on Jin's chest, but was only too eager to clean it off. The dick broke him. His changes might not be over yet with a few more days to go, but there was no way he was going back to fucking women after this. And it looked like Jin got a fuck toy out of it, too. He was strangely proud of his brother.
Danny finally came in the grass, his thoughts on spit-roasting Terry with him and his brother on either end, his cock softening enough for him to pull up his shorts and head back to the pool without being too obvious. 'It was just a revenge boner,' he told himself. 'Getting off on getting back at those fuckers. Nothing to do with watching two guys fuck.'
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Jin sat on the bench, still completely naked as he watched Terry slink off. Then the adrenaline rush faded and he sagged a little. What had he just done?! It was like something had just taken over, making him go from his usual cooperative docile self to.. whatever that was. Confident, sure, cocky. So much like Danny. That had been Jin's first time, and he just took charge.
He laughed softly, giddily. It had been a rush. He made Terry do exactly what he wanted just with a few words, a stare, and a flex. Now he knew what got Danny off on being such a muscle head. It didn't explain what was happening to him, but it certainly made it easier to deal with in his mind. He grabbed his shorts and tugged them back up before heading to the pool. He didn't even notice the change in his stride, his usually downcast eyes were up, he wasn't slouching, and there was a definite strut in his step.