Love & Happiness

So it seems that you can't learn to love from God? It seems the idea of Agape/Unconditional Love from Christian Teaching was revolutionary when Paul first talked about it in the Bible. This love was not a love that most people tried to live up to until the example of Christ. So basically this type of Love is based on God (in Christian thought). Is this Love possible? What is your ultimate goal by loving someone? Personal Happiness? I'll tell you from my own experience personal sacrifice is more conducive to a loving relationship being successful with someone than personal happiness. What do you think?