Boyfriend/ˈbɔɪfrend/ Definition 1 of 4Pro Tip 1/3Romantic Relationship Use 'boyfriend' to specify a loving and committed relationship with a male partner. She introduced Tom as her boyfriend at the dinner party. Pro Tip 2/3Not Just Dating 'Boyfriend' suggests a stable relationship, not a male you're casually dating. Emma's boyfriend is coming over for a family dinner tonight. Pro Tip 3/3Exclusive Term Use 'boyfriend' to indicate exclusivity, meaning not seeing anyone else romantically. I can't go on a date with you; I have a boyfriend.