Being spiritual is using a dictionary.com definition: closely akin in interests, attitude, outlook, etc.
When I make a new friend and we begin to get close and discover our interests are similar there are really special moments which I really enjoy.
The honeymoon period of being a Christian! This is often a period that people speak of as one which we look back on with abandonment and sheer joy in the 'spiritual' sense. I still experience moments of this joy as I grow in my faith. Because each time I realise that I have the same interests as an amazing and kindly God... It is sheer joy.