PS we didn't talk for about 5 months, And i see him almost everyday.
Most Helpful Guy
Where I live, guys and girls don't use to shake hands, so it'd be considered rude. It depends on what's the custom where you live. You should greet him like you greet a new friend.1THIS IS NOT RELEVANT ANYMORE
Most Helpful Girl
You can shake his hand.1THIS IS NOT RELEVANT ANYMORE