Yuri has to say it; Flynn is cute when he's shy.
He isn't most of the time, not cute or shy. Yes, Yuri will agree that his lover is handsome, but "cute" isn't an adjective he would often use to describe Flynn, and neither is "shy." Unless, of course, they're used in the same sentence.
For the most part, Flynn is commanding, both in presence and in attitude. There's a reason why he has made it so far up in the ranks of the knights. He isn't overwhelmingly powerful, but something in the way he stands and moves conveys confidence, and his soldiers always scramble to fulfill their orders. Oftentimes, he's the same in the bedroom.
Yuri isn't one to talk; after all, he's the same as Flynn, though his leadership was thrust upon him rather than worked for. But his attitude remains the same whether in battle or bed, and Flynn would never describe Yuri as "cute," of all things, let alone "shy."
It's only after they get into fights that that side of Flynn makes an appearance, especially when he realizes he's the one at fault.
Flynn's touch is gentle and careful at times like this. His fingers tremble, and he can feels his ears and cheeks heat up. Yuri can tell too, when they kiss and his lips are more hesitant than usual. Flynn pulls back quickly at as Yuri bites his lower lip a bit harder than normal. He's unwilling to meet Yuri's eyes; the long haired man grabs his chin and forces their eyes even, seeing the unspoken apology in Flynn's. It's difficult not to forgive Flynn instantly when he's like this, but oh, it's too much fun to forgive him just yet.
Flynn's shyness is almost contagious; Yuri finds himself touching Flynn's chest and stomach far more lightly than he normally would as he pulls off the blonde's shirt, and the blonde returns the gesture hastily, nearly tearing the cloth in the process. Flynn is quick to forgo the foreplay and skip straight to the sex, and Yuri is somewhat surprised as Flynn spreads his legs so willingly. Yuri makes every step a long process, insisting on sliding in an oiled finger one by one until Flynn is practically begging.
The blonde has rarely looked better, his face twisted in ecstasy as the pain draws tears from his eyes, and Yuri wonders vaguely if it's fucked up for him to think that. Fucked up or not, Flynn is ravishing like this with his blonde hair barely touching his shoulders and his face all flushed with a mixture of heat and that irresistible shyness.
Yuri doesn't know how he does it, how he can conjure up a feeling that's usually so deeply hidden. Few people aside from Yuri and Estelle know of this side of Flynn, since the blonde usually uses similar tactics (minus the sex) to persuade the princess to forgive him too. Yuri is glad it's like this, that there's a secret side to Flynn and that he is able to draw it out.
Flynn's eyes are pleading but he remains voiceless even as Yuri comes inside him with a shudder. With a sigh and a faint smile as he finally gives in, Yuri leans forward to brush Flynn's hair from his forehead and kiss him gently.
Some sign of affection. That's all Flynn wants, and the lack is all that it takes for him to act like this.
"Sorry about before," Flynn breathes a few minutes later as they lie together. His arms are tucked up against his chest, and he leans into Yuri's shoulder, his cheek pressed against muscle.
"You're an idiot," Yuri replies. There's a certain fondness in his voice as he strokes Flynn's hair.
He should really forgive him more quickly next time. If only Flynn weren't so damn cute.