I've tried to improve this a little, not sure it it worked but hey ho!
Disclaimer: I do not own Free! Iwatobi swim club, any characters mentioned, any cover images displayed or High Speed.

Three brisk knocks on the front door could be heard from the living room. Makoto and Haru looked at each other, they weren't expecting company. The boys were having another sleepover and were in the middle of a racing game. Actually, perhaps sleep over isn't the right term, since Makoto had been at Haru's for over a week. Their vacation was coming to an end, and school was resuming within the week so they were making the most of it. There were more knocks, each sounding more rushed and impatient; Haru walked to the front of the house and slid open the wooden door- he froze. Rin was stood there. Rin, who he hadn't seen for four years, who was supposed to be in Australia, and who was always eager to prove his superiority to Haruka.
"Rin?", Haru's gaze was exasperated and horror stricken. Why was Rin here? At Haru's house of all places!
"Can I come in?" he asked coolly. Haru wasn't sure how he was going to respond, but then his heart sunk. He heard Makoto's footsteps echoing louder as he came around the corner to the doorway. "Haru, who is it?" He stopped, and his face broke into a surprised smile.

"Rin! You're back!".
"Yeah, I decided to go to high school here in Japan. I'm starting at Samezuka next week." Rin sounded completely disinterested in what he was saying, clearly he didn't come to Haru's house to make small talk with Makoto.

Haru's mind was racing, and he had totally forgot about Rin asking to come in.
"Haru-chan, aren't you going to invite him in?" Makoto's sweet voice brought him back to earth, but inviting Rin inside was the last thing Haru wanted. Still, he was curious... anyway, nothing would go wrong with Makoto here, right?
"Yeah sure, come on in Rin."
Rin walked past Haru, their shoulders brushing as Haru experienced a shiver down his spine.

Makoto smiled warmly at Rin, and offered him a drink which Rin declined. He seemed irritated at Makoto's presence. He took the hint, eyeing the pair suspiciously, he put some drinks down on the table anyway and told Haru he would take his bath while Rin was here so that they could catch up.

Rin and Haru were alone now; and Haru felt uneasy.

"Why are you here?" he asked, in his usual nonchalant manner.
"You know why I'm here, Haruka."

"Look, if you're after another race you're wasting you're time, I-" But Haru was cut off. He felt Rin's lips silence him, and he gasped in surprise as he pushed him away.

"What the? You think you can come back here after four years and for nothing to have changed?"

"Come on Haruka, don't be coy" Rin said impatiently, his eyes burning into Haru. "We both know you still have feelings for me".

Haru was getting angry. How dare he! How dare he have the audacity to come to Haru's house while Makoto was here and try to kiss him! Haru may have had a crush on Rin when they were kids, but that was the past, he wanted nothing to do with Rin. If Makoto saw him, he would never be able to admit his true feelings to Makoto, and worst of all, he would hurt him.

"Look here Rin, I don't know where you get off on thinking you mean that much to me. We were kids back then, and you were a stupid crush, nothing more." Haru looked down at the ground, as he couldn't stand to look at that smug grin. The way Rin looked so certain of himself made Haru feel sick. Clearly he had decided he wanted Haru, whether it was just for now, or longer, Haru didn't know, and quite honestly he didn't want to. Makoto only took short baths, and he wanted Rin out of his house as soon as possible.

"Don't kid yourself Haru. We both know you were devastated when I left, and that you've been trying to fill that void by pretending you love Makoto. You're living a lie, I just came to put it right."
Haru shook with anger.
"Living a lie? Pretending to love Makoto? No. You're the one who is kidding themselves. Coming back to me after four years on the grounds of a childish crush? I love Makoto, and that will never change, no matter how many times you tell me it isn't true, I know where my heart belongs."
With that, Haru took a deep breath inwards. He had never admitted to anyone his feelings for Makoto. And now, he had angered Rin, and worst of all, given him leverage to hold over him.
"Is that so?" Rin had a cruel glint in his eyes, "Have you told him?"

Makoto sunk into his bath, and tried to relax; which was easier said than done. Why was Rin here? Makoto had always envied Rin when they were kids, no matter how hard he fought for Haru's approval, Rin had been the object of his affection. They were friends, so Makoto was sad when Rin left for Australia, but he couldn't shake the feeling of joy that he would have Haru to himself again. Makoto often tried to forget that he had felt like that, it mad made him feel like a terrible and selfish person. He knew Haru was upset that Rin was leaving, and he hated seeing Haru like that. Still, he was back, and Makoto was more than a little curious as to why Rin would show up at Haru's house at this time of night... in this weather. It was more than a little strange. Why couldn't whatever he had to say wait until morning. Wait! What if? No! It couldn't be, could it? Is that why Rin came back? For Haru? His Haru? Well, not technically his, but anyway, getting back on track... Makoto sunk further into the tub and his eyes welled up with tears. Should I tell him? He wondered how Haru would react, if he admitted how he felt. How he had always felt. And how he was pretty sure he always would feel. If Haru rejected him, and he probably would, it could ruin there friendship. Was Makoto willing to risk that?