Love is an action, not just a feeling. Sometimes to love others it requires more than simply a feeling in your heart. Sometimes we have to step outside our comfort zone and be more like Christ and less of ourselves. Love becomes an action when you do something for another person or forgive when the other person doesn’t deserve it.
It doesn’t matter if others are nice or not. We should extend ourselves to love even when others aren’t capable or willing. It spreads love when we love and it will come back to you. What you give others is measured back ten fold.