My definition is when you good excited about your surroundings and people around. you.
mostly it can be felt near sea, or trees and flowers, even seeing buildings also one can felt good but that wont be romantic. with people its tricky other than your family and friends.
there is sensation of something good is going on, and you can breathe nicely and feel calm and relaxed. it may last for a little until you mind made pattern starts interrupting and imagining problems.
Awareness as agent of change, practical philoshophy 