When you love someone, you tell them: "I love you"
When you are in love with someone, you say: "would you like to have a cup of tea?"
Loving someone, and being in love with someone are 2 different things. You are using SW right now.. but how many times do you remember your loved one while you are here? Those who are in love really.. will not be much affected by online people.. but yeah inspiring words might tell them to do things better, be a better person. But still their heart would speak here, as if it is not their own, it is of their lover's.. that is the feeling of being in love.