Is loving a sin?

Two hearts that beats as one
two hearts that shines like a sun
is there could ever be magical than love,
which has always been blessed by above?

people do make mistakes
but what if love is at stake?
why do people treat love like a sin,
even if people don't mean

love can be very passionate,
but why do people realize it late?
is a loving a sin,
how could it been?