@justt-maddie I'm so sorry that happened to you... My friends have told me that it is cardinal rule to not date your best friend's ex. That is just wrong. I mean, you didn't even have enough time to think or decide whether you were okay with your own decision or not.
Well, obviously they are not your best friend, and your ex was not the one for you. You know what, you are a beautiful girl and you deserve much better. I'm sure there is someone better for you out there, if not a boyfriend, but a friend too.
Don't give up!