Three to four months. To fall in love, you need to know your love interest better, which does not happen overnight. Have you heard of love at first sight? It is true you can feel an instant connection with someone, but that doesn’t mean you have fallen for them. Love at first sight means you find the other person pleasing or beautiful. Do we need to remind each other falling in love goes beyond physical attraction? Generally, men take at least 88 days to fall in love while women take at least 134 days to say “I love You”.