Let's try to forget "falling in love" and thinking that it would be an accident. Since we have chosen to love someone then we shouldn't be hesitant, uncertain, or doubtful. We should forget about the idea wherein we fall out of love or we are no longer capable of reliving the spark. If we love someone all the efforts and investment that we try to showcase will never go unreciprocated. 

Therefore if someone has fallen out of love then they do not truly love you. Stop trying to get hypnotized and pressured by what society dictates and make sure to invest all that you have for someone willing to do the same thing for you. That my friends, is true love.