Ideas to try and find him.
If he lives in Granada, there is no harm in going back to find him. If you don't meet him, you might meet someone else.
Use Hubpages to help -What is his name and where does he come from? You never know there may be someone on Hubpages from the same town who knows him or could help you find him.
Use Facebook - have you tried looking for him on sites such as Facebook, or just searching his name on the computer to see what comes up?
If he knew your full name, make sure you are on Facebook. If he is interested, he will find you.
Pray to God and trust in God. Tell God you love this person and say that if this person is right for you, ask God to bring him back into your life.
I have prayed to God about problems in my life on various occassions with some very interesting results.
Don't get too obsessive about him though. Go to Granada if he lives there, if not use Facebook and Hubpages. Pray to God and then leave it up to God's will.
Then get on with the rest of your life. If he is meant to come into your life he will. If not, you will meet someone else eventually.