Caring for someone who does not feel the same can bring hope, grief and embarrassment all at once. Your feelings are real; they do not create an obligation for the other person to return them.
Let the answer be an answer
A no, a lack of interest, or a request for distance should be respected. Repeated messages, pressure or grand gestures do not make mutuality more likely; they can make the other person feel unsafe.
Grieve what you hoped for
You may be mourning a relationship that never began as well as the person. Give yourself room to feel disappointed without turning the rejection into a verdict on your worth.
Make space for your own life
Taking a break from reminders can help if contact keeps reopening the hurt. Talk with friends and return to routines that feel like yours. Missing the person again later does not mean you are back at the start.