Perhaps it would be helpful for you to understand the stages of grieving (and the possible experiences of shock, denial, anger, bargaining, guilt, depression, acceptance, and resolution) - you might experience any of these in any order. It takes time to get over the loss of a relationship. Her decision to be involved in prostitution is probably complicated. And may be risky is many ways. Have you got yourself checked out for STIs? Yes, a person can expect to feel empty upon ending a relationship. If she is involved with other guys - then it's a reality for you to accept.