How do I stop with wanting validation please help if you can

This is embarrassing for me but i want validation and attention from people that I don’t like? Like there was a guy who was not a good person and he liked me and I rejected him multiple times and then when he finally stopped liking me I felt like I need his attention back. I never did anything, I just felt that way?. So stupid I know but it’s almost like it’s automatic for me. Another example, a friend I stopped talking to because they were not putting effort into our friendship and then when they moved on I was like why are they not wanting my attention? It’s embarrassing on my behalf because these are NOT good people but I have validation issues and it’s so bad cuz I have the feeling everytime. Is there a proper fix for this. Sorry and thank you that you had to read this.