Most Helpful Guy
If you have more to offer than sex. Otherwise no. Which is why some women who ONLY have sex to give whine about guys not wanting to date them.
But if you have more to offer and you want a real relationship, don’t start a relationship on sex. It will just make it harder for you to tell if a guy is really into you or faking
Most Helpful Girl
Unlikely but possible, that isn't the reason people tend to fall in love.
Love is usually something when you develop a mental connection with the person.