Would you like to see Jesus? Consider this when you say to someone "I love you".

The best useable definition of love I have ever heard and a great summary of 1 Corinthians 13 in the Bible is, the act of "looking out for someone" without violating their free will.  Although strong warm fuzzy feelings may accompany such actions of love, they are not necessarily required.

Jesus said the way to love God, or, the way to look out for God is to do what he asks (John 14:15). It is always mind boggling to me that we can look out for God, but according to Jesus it's the 1st most important thing he asks us to do. (Matthew 22:36-37)

The 2nd most important thing he asks us to do is to love our neighbor, or one another (Matthew 22:38-40). To be consistent with the definition, to look out for another without violating each other's free will.

He even asks us to love our enemy (Matthew 5:44). This does not mean to have warm fuzzy feelings for them or to ignore their evil. To ignore their evil would be not looking out for them and more importantly not looking out for their victims or potential victims, the innocent.

Real love, try it!  You'll see things or even better yet someone you didn't expect. (John 14:21)