Bilbo was more than willing to lead Thorin into the bedroom. He enjoyed sharing a room with the Dwarf, sharing a bed with him. Even when there was nothing sexual happening and they just slept. Bilbo enjoyed being close to Thorin.
Once in the bedroom, Bilbo stripped down to just underwear, and slipped onto his side of the bed. They seemed to have claimed their own sides of the bed, without any argument whatsoever. They had just gotten into a comfortable routine.
"I love you, Thorin," he said, as he pulled the covers up and made himself comfortable.