Michael twists away from the hold, startled and not usually reacting to people touching him without warning when he doesn't know them. But as soon as he sees Alex, the wariness melts away and he opens his mouth to greet him, to ask why the hell he's HERE - something. But then Alex is kissing him and, as usual, Michael's brain promptly kicks into an Alex-central mode and everything else gets abandoned. He leans up into the kiss as Alex bend down, hand coming up to wrap around the back of his neck, other hand gripping his bicep.

When it finally breaks, Michael drags in a breath, managing to refocus, a little. "Alex? What the hell are you doing here? Are you okay?" He yanks his legs out of the pool to stand, looking around with a touch more wariness than he'd had when it was just HIS safety at risk, hand wrapping back around Alex's arm.