Henry could feel that all the air in him was gone, all he had going was pure willpower, and her easily opening her mouth without troubles only assured him that this was cheating. Eventually Henry couldn't stay under any longer or else he would burst, and he didn't want to be known as the guy that died because a girl gave him the puppy dog eyes to get in the water. So he rose to the surface gasping in air, a little light headed for ignoring the fact that he needed air a while ago.