Other forms: boyfriends
A boyfriend is a male romantic partner. Your cousin might ask if she can bring her boyfriend to the family Thanksgiving dinner this year.
Usually, your boyfriend is a boy or man you're romantically involved with. Your aunt might join a dating site after breaking up with her boyfriend, and your ten year old neighbor might announce she has a boyfriend after a boy leaves a candy bar on her desk. The words boyfriend and girlfriend first appeared in the early 1900s, around the start of modern dating in the US.