Kittyvlekkie, I won't judge you by your age - you're at the perfect age to be learning this stuff.
One of the best pieces of advice I can give is to find girls who have similar interests to you. Be that music, tech, geek interests, hobbies, sport...whatever. Join the groups at school which have these interests. (eg, my daughter is 14 and plays guitar - so she meets a lot of boys through the music programs) It will give you a lot of common ground to start with. Also, practice talking with girls who can be just friends. It's easier to talk when you're not wanting to foster a relationship.
If the girls at school really aren't an option, look for social options which are outside of school.
I hear you when you say that you fall in love easily. However, I urge you to take another look at what you call "love". It's more likely to be 'infatuation' which is very easily mistaken for love...especially at the age you are. I remember it all too well myself.
I hope there are social skills and dating programs for Aspies in your country. They'll help you a lot with having a good conversation and learning to read the signs of interest/disinterest. Amazon also have a mountain of books with advice for Aspies and dating - you may want to investigate some of them.
Good luck!
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.