Is it normal to live in a double bed with your boyfriend?

Not normal. If you are not married or have no boyfriend, living in a double bed with a male girlfriend will make people around you misunderstand, so it is not normal. Male girlfriends, a popular word on the internet, refers to the close male friends that girls talk about everything. They can play together and share their worries, but they are not lovers. Literally, they are "blue confidants".