@cgr Well, she didn't know what sis text so that could be the reaction for her sis text, not his. He just past out right there so i don't see it a way to imply he agreed and text anything back. More like that she shock too, like "how come i never think of this", hence she praise sis god
But anyways, he probably will go. I don't see him refuse to this, even he scare, but refuse also scare too, it could be rude.