
Boyfriend
Romantic Relationship
Use 'boyfriend' to specify a loving and committed relationship with a male partner.
She introduced Tom as her boyfriend at the dinner party.
Not 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.
Exclusive 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.