Attachment issues?

I’m afraid to go out and say that I do have attachment issues but I feel like I do, I can I be wrong! It’s just if I get close with someone or even getting closer to knowing them I get attached thinking it’s going to go somewhere but then I get ignored, or they move on. I remember I moved away from my hometown and it was heartbreaking how all my friends were doing fine yet I still think about them to this day and all the memories I still remember but I know they don’t.