You need to allow yourself time to grieve - the end of a relationship is the death of hopes and dreams you had for yourself and that person. Allow yourself space and be aware but not judgmental of how you feel. Accept such emotions serve a purpose at least - they allow for healing etc Be mindful also that such extreme sensations cannot maintain themselves either - progression is inevitable even if it doesn't always seems apparent. Seek professional assistance if you feel it's necessary but i would encourage you to keep posting here too, i find it a great comfort at times. Good luck.