Claire and Charlie were a legally married couple, so suddenly asking why Claire was in his bed felt strange, both for himself and presumably to Claire as well.
Claire, reading his mind again, mustered her courage and asked, "We've been married for so long… Don't you think we can take things further?"
Charlie was as surprised as he was delighted, but restrained herself and asked gingerly, "I thought you said we'd take it slow… Step by step…"
Despite her shyness, Claire pointed out, "We're marr