What does mean of love?

Answer 1

It means that when you shed a tear, and you still want him.

It means when he ignores you and you still love him.

It's when he's with another girl and you still smile and say ''I'm happy for you!''

When all you really do is cry and cry....

Answer 2

Love is an emotion and not easily or simply defined. It may mean different things to different people and no single definition will satisfy all situations.
One of the most succinct definitions I have read is that someone else's happiness is intrinsic to your own.
There are many others equally valid. To actually give your life for someone else. Not to say you will but to do so. To support your family and friends, especially when it is difficult.
It certainly has nothing to do with any particular religion.