Your entire love life has been one long lesson -- or, more accurately, many small lessons, some of them repeated -- of what to do and what not to do in love. And these days, you've kind of got it down. You know what works and what doesn't; you've got a reasonably good idea of how to treat other people, and how to keep them coming back for more instead of running screaming in the opposite direction.
You're one of those rare people who is actually good at breaking old, unhelpful habits instead of staying stuck in them forever, and your lovers -- not to mention your future-life selves -- will thank you! You have learned from the past, from all the crushes and relationships you've already been through, and you'll continue to do so as you progress through life. Even when you finally meet that very special someone who really makes you happy, you'll still keep learning from the relationship itself. Any mistakes you make in love, you know you can correct later. It's rare that you'll repeat mistakes, and if you do, well, you'll just learn your lesson that much better! This is a wonderful aspect to have for evolving as a lover and as a human being.