[To be honest, Shun would have a good deal more luck seeing him embarrassed if his heart wasn't going so fast. At least then, Ren would be worried that he was making Shun genuinely uncomfortable, instead of just doesn't-know-what-to-do-with-himself uncomfortable. But it's hard to take that awkward expression and his rapid pulse any other way, and it's really just encouraging to think that Shun might be feeling the same way he is.]

It's going to take a lot more than this for me to be embarrassed.

[He even (reluctantly) takes his hand away from Shun's chest to help tuck his hair behind an ear--just on one side, so Shun can keep messing with his hair on the other. And maybe he is feeling a teeny tiny bit awkward and that's why he's a little pink and it's not just because he's turned on, but he's definitely going to deny it if that's the case.

What probably also doesn't help his case is the way he starts shifting to get a little more comfortable and then abruptly stops as he realizes it's even more awkward to do that now with they way they landed. So he just settles for putting his hand back down on Shun's chest for balance and leaves it at that for now.]

I didn't think it would be so easy to embarrass you, but it's pretty cute.