A Bittersweet Pain Called Love
The first few times Rei encounters Nagisa he considers him a bit of a pain. Not a "get out of my face" kind of pain, because that is rude and not at all beautiful. But somewhere between when a fly is buzzing around kind of pain or when your computer freezes before you save your homework. Did it really have to be him? Why had Nagisa been so persistent that it must be Rei who completes their team?
Looking back on those fateful first meetings Rei is very glad for Nagisa's persistence. Without the blond boy's tenacity he would never have made such good friends within the team, or have been able to get as close to Nagisa as he is today. Though he doubts Nagisa would have given up that easily even if he had refused even more then he had. Which brings him back to pain.
Except this time it's a very, very different kind of pain. It's a pain that makes him hot all over, his heart hammering, threatening to burst from chest. It wakes him up in the middle of the night covered in sweat and leaves him gasping , reminiscing of lingering touches and magenta eyes. He shakes and stutters with a dry throat and his skin seems to be permanently flushed. He rambles and sputters and try as he might his words just don't come out the way he planned. And it is most definitely not beautiful.
But when he hears that sweet, joyful giggle escaping from soft pink lips he finds he doesn't really mind. "You're so silly Rei-chan" Nagisa would sigh into his soldier, his voice muffled while his lips press onto Rei's neck. It's a bittersweet pain that Rei enjoys more than anything in the world. And as he glides his fingers through a halo of blond hair and relaxes further into the embrace he thinks and reconsiders.
If it is for Nagisa then surely it is the most beautiful pain of all.
Authors Note: Well that was... something? I'm sorry idek what this is. I saw a cute pic of them cuddling on tumblr and was inspired to write fluffy lovesick Rei