Why do I wake up thinking about my ex?

If it is a recent breakup, you will remember him or her very often. It is normal. Small things will remind you of your ex.

Maybe it's because you're not complete over your ex. Give yourself time to heal and move on, don't set a time limit on yourself. Or perhaps, you hold a grudge against your ex for what he/she did. If that's the case. Forgive them.

A strong bond has been created and it's not easy to remove so a part of you is tied to the memories of what you shared together.

You still have feelings for her and deep inside you want her back. You maybe put a lot of effort into her

Sometimes it is hard for us humans to let go.Actually,letting go is something we learn through years.

There are many reasons why it could be possible, maybe you have some unfinished business together or you miss them! Maybe you are still healing!

because the relationship with her stick to your head strings. you and her have had a lot of memoriese together. she helped you, heard your confession, share laughs, sympathized and empathized with you, she used to accept who you are. and you two may had sexual behaviors towards others, and this left you with a lot of emotions and beautiful memories. and you remember her because you still want her, more specifically, you want the feeling she gave you. it's hard to just try to forget. find some hobbies and focus on it, give all your thought for one subject. you'll slowly forget her and feel better.

Its common to still have feelings for your ex. Maybe you think about them because you still care about them

I think you give more in this relationship and get nothing so i think it is better to think about how will your live going instead

Perhaps you're not fully over him or her. Maybe you're feeling guilt or something similar that makes you want them back. But it is important that you move on. So try to find ways of coming to terms with the break up.