Hope you are fine, it is said that a person is young while he feels love,and you have time as long as you love.
You said that love is an instinctive feeling , I agree, but it is not like feeling thirst or hunger. Love is a temporary madness, it erupts like volcanoes and then subsides. also love needs its conditions, the sexual desire would be crucial to create the love. Normally love creates between two opposite sex. What makes two opposite sex to be in love , the sexual desire is an instinctive feeling ,so it creates love. My reason is why love always creates between two opposite sexes.
The second point is the environment. For example a man who works with several girls in his work place ,he has working relations with her colleagues ,but there is more possible circumstances for his madness , beautiful gardens with scenic beauty providing an icing on the cake to the strong feeling of love and blossoming romance between a girl and a boy head over heels in love
The third point is the movies , people believe that their real world as what they watch in a movie, the stories which are shown on the celluloid about love to create a misconception intentionally or unintentionally that love is a beautiful experience and an inevitable part of our lives.
All the best