boyfriend

Boyfriend this word is very very "Subjective"!
I'm feeling a little cranky now - i totally cant define this word.
Is boyfriend a good friend of my bearing an opp sex or is he someone tt accompany me as & when i need or is he someone tt i bring to party or is he the person tt slove my problems or is he tt someone whom will spend the rest of his life wif me?
Such a messy feeling.