Both times that I've been in love, it was with women whom I did not find attractive at first. A woman has also fallen for me after a preliminary rejection. This does refute your hypothesis, however, it's irrelevant, as they do not apply to the adult world.
In both cases, it was with women that I had to see and to keep seeing, as they were classmates. This yielded enough time for a connection to develop. Once you keep seeing somebody, either in class, or at work, or in church (hypothetically), you have the opportunity to have the other person to re-evaluate you, by somehow improving your own value. But there is no such second chance in the adult world of online dating. If you don't hit a spark on the first date, you will never get another chance. It doesn't matter if a magic potion gives you a perfect body and face -- she won't be willing to meet you.