Okay so this guy is overly flirtatious. Why is it getting to you so much that you'd want to leave the studio you like. From what you described it doesn't sound like it reach a point of creepiness. He hasn't tried to cop a feel or anything like that, so you said. Kinda sound like they are swingers (not referring to swing dancing). Just brush him off, laugh at his advances, ignore hime, etc. If he tries to make a move, slap him. Use youre common sense. I'm sure every woman has experienced unrequited love (or lust) for a guy.