Konstantin, who is both an enormous flirt and a celebrity in his own country, is no stranger to bringing a bit of pink flush to someone's face. Flustering Arthur isn't necessarily his intention, but it delights him to see the reaction all the same. (Granted, he doesn't quite understand the relationship between the odd pair entwined together before him, and isn't inherently assuming there's something romantic to it.)

The cosmonaut beams, more at ease in his element, in assigning endearing nicknames to people and seeing them look pleased about it. John's question has him giving another warm laugh, and he lifts a hand as though to try and reassure him.

"Don't worry, nothing that shouldn't be loosened." ...He hopes. John's anatomy is definitely different, okay. Konstantin's never tried to help someone with hooves and... tentacles? But he loves a good challenge!

"Basically just working your muscles out a little. Helping them get stronger, so you have more control." He forms a fist and flexes his arm to demonstrate. "But we could start out easy. Do some simple stretches, until you feel comfortable. What do you say? I won't charge anything this time," he teases, and gives John a playful wink. Even flirting with an eldritch entity... Konstantin...