Strange is slowly discovering his limits. And, after a solid minute and a half of cuddling, he's realized that he's reached the peak of his limits. He attempts to float back and out of Yuya's grasp, but the spell dissolves before he can do so.

There's a quick "Oh damn" seemingly emanating from the fire itself before Strange loses control of the magic, turns back into human, and then pretty much knocks Yuya over because that one foot tall ball of fire has now suddenly become a six foot tall man.

His bad.