If noticeably flirtatious is too flirtatious, then yes, maybe: his eyebrows raise and his smile goes a little uncertain--not in a shy way, more in a did you do that on purpose way--and he might blush. A little.

"Carrying is, ah. Definitely my speciality," Alistair says, slowly finding his metaphorical footing again. "Reaching tall things. If you play hide and go seek, you can hide behind me."