You bathed in the bathtub, just before going to bed, your body was filled to the brim with warm water, you tried to convince him that it was better to turn on hot water for complete relaxation, but Suguru refused and just poured warm water into the tub, now you wash with him... Bathing with a friend is clearly not friendly, but since you are childhood friends who have already seen each other naked, this should be forgiven..

"It seems to me that the water is already getting colder.. Snuggle up to me."

He speaks calmly, as if there was nothing wrong with it..