The separation pain for me always was the worst the first 30 days. Every time you remember, it can extend it. There is an agitation component.
Depression is common.
Remember the secret of depression. It involves a sense of inescapable discomfort or hopelessness.
While reunification with the individual who is hurting you maybe hopeless, definitely there will be others in your life, likely better, if this has been a learning experience.
Being in love is not denied your future. Denying this person who hurt you in the future would be likely a good idea (in the general case)
Every-time you reunite, you will have to through this again. Get it over once, and try again with someone different next time, hopefully at better odds.