Luv is a word used by middle aged dads in the uk to refer to their wife.
Alright Luv, just nipping down to the West Ham game
A girl, most probably a lesbian who is into children. Pedophilia is luv
Love is when you feel such a deep desire for (typically) one person, that all other people seem dull to you. This feeling is often followed by irrational thoughts or actions.
Jo: hey how’s things going with that chick?
Mo: bro, I deleted my dating apps
Jo: bro, it must be luv