Aries: very easily
Taurus: not long but it takes months for them to admit it
Gemini: *What Is Love starts playing*
Cancer: Fairly easily but they'll keep denying it
Leo: stroke their ego and they'll be AllllllllllllLLL about you real quick
Virgo: not at all
Libra: Is constantly in love, so falling in love with someone takes two seconds
Scorpio: right before a one night stand. However it fades quickly
Sagittarius: pretty easily but bounces back
Capricorn: it takes forever and a day to get one to fall in love
Aquarius: *whispers* love isn't real
Pisces: talk about puppies and give it five seconds