Loving thy neighbor, together with loving God, form the core of the Christian Life, it does not just mean having positive feelings towards a person, always saying 'yes' but love that is connected with keeping God's commandments.
I have written a short reflection on the topic the day after I attended talk 6 of the CLP I was part of - and though the core subject is the same, this time was different and I learned even more.
Love is patient, love is kind. It does not envy, it does not boast, it is not proud. It does not dishonor others, it is not self-seeking, it is not easily angered, it keeps no record of wrongs. Love does not delight in evil but rejoices with the truth. It always protects, always trusts, always hopes, always perseveres...