There are many different ways to define love because in English we use the one word for a number of different emotional states.
This is one definition that I like.
"Love isn't a feeling, it is a decision."
To illustrate this definition consider this situation that some of us might be familiar with:
A husband comes home very late after a night out drinking with the boys. His wife is in bed, pretending to be asleep. She knows that he is drunk because he has the hiccoughs and is having trouble getting out of his trousers and underpants. Eventually, he manages to put on his pyjamas and climbs into bed and quickly falls asleep, snoring loudly. His wife also goes to sleep.
An hour later she is woken by the sound of retching, as her husband leans out of bed on his side and vomits on the carpet. At that exact moment, she does not like her husband very much but she gets out of bed, turns on the light and tends to him. When she has cleaned him up and changed the sheets, she gets down on her knees with a basin of water and disinfectant and cleans up the mess on the carpet.
In the morning, she still doesn't like him but she shows that she loves him by deciding not to serve him a fried breakfast while playing the 1812 Overture t top volume, which was her first thought on waking.
This folks, is a true story, because I was that wife. :grin: