Haha sounds like a very aro thing for your mom to say. I'm thinking it's like nomerci says, people choose whether to act on their feelings. I think there also the act of dating and people maybe conflating that with the actual romantic feeling. Because when you date you usually bring in practical aspects to like does this person seem like they would make a good partner. If they do seem to make a good partner that can increase the persons romantic attraction to them too, and make it seem like they choose their attraction to them.