I am glad to hear that you are done with this person. You can be nice and loving person yet not allow others to mistreat you. Being a good person doesn’t automatically make one naive or clueless and vise versa.

People always reveal themselves. The trick is to pay attention. He revealed himself and you figured you don’t need guy like him. Good for you figuring it out! Some people spend their whole life being oblivious and you figured it out at young age. Good job.