Sending lives to a specific friend

Okay Marko, now send me your heart

i noticed this thread was about sending lives to certain people,well i actually send them to all when I see the 'red hearts' signs when I'm playing the game, but when I ask for lives in return-I rarely get them back. Friends are meant to help each other out not just me sending you lives all the time. Be fair and send them back when you can or even some magic beans-otherwise I'm going to stop sending them and only give to people who i know who do return the favours..