What i've learned from this song is how lucky someone when they're falling in love with her/his best friend.
Everything is hard become easier. Also they have known each other before
I learn that fall in love with best friend can have a great bounding that never left each other and wish to meet again and again until stay in the same rooftop, also feel thankful that they can be together until the end of the day, lucky... me.
We learn . that we always have a feeling thats our best friend whenever we go or what happen time or accident . make a memory that unrased . thats we always remember our best friend will on our side in feel forever . so now don't forget your best friend what happen to it. its always a best friend.