Remus was probably if not more shocked than the rest of the Great Hall at the kiss that Sirius placed on his lips as he tired to figure out what was going on, what had happened to his friend to make him act like this.

This time it was the Deputy Head Mistress that brought him out of his thoughts with her question. "Something must have happened during potions Professor as afterward Sirius was acting like this." The Gryffindor prefect explained wanting this day to end quickly so that he could forget about it.