Percy had to laugh at that. "Cass, you live in my house; I'm putting our careers at risks. It's pretty safe to say that I trust you." OF course the fact that he'd opened himself up was better proof than any sleeping arrangements.
He followed Cass to bed. He didn't know how they managed to move with all the kissing, but they did, and soon he was getting into bed, and pulling Cass with him, because trust or not, he was a Gryffindor and he did things before really thinking them through. In this case, it was perfect, because Cass was still kissing him and now their bodies were touching in all the right places. "We've been dancing around this for weeks," he murmured between kisses. "I'm fine."