How can I get my boyfriend to back off on the possessiveness?

Possessiveness ? Patients with OCD often do not realize they have a problem and usually would require treatment w. Medication and therapy.
Possessiveness. Confront him while having another close friend be present for support & encouragement.
Talk. Tell your partner how you feel, and focus on yourself and your feelings or your partner may become defensive or just shut down. You may feel scared or smothered. Communication and trust is important to any relationship. Ask your partner if everything is ok.