Most Helpful Guy
To be honest, from my perspective, it doesn't seem like it was your fault at all. I believe that when she realized how clingy you were and how much you loved her and missed her, she just realized she didn't miss you as much as you did her. Maybe she changed when she was in Europe. Maybe she just didn't really love you as much as she let on. Regardless, don't blame yourself, because it most likely wasn't something you did. It's also possible to fall out of love, so don't give up hope, just find some way to keep yourself occupied so you don't have to think about her so often. With time you think about her less and less. All the best!