How do you handle bf’s excessive jealousy?

I love my boyfriend and I don’t want to break up with him, but his jealousy is becoming really difficult to deal with. He gets upset when I talk to my male coworkers or if I go out with my girlfriends and their boyfriends are around. What hurts the most is that when other men make inappropriate comments or harass me, instead of supporting me, he gets jealous and accuses me of doing something to provoke it or acting like I wanted the attention. It’s like he blames me for being harassed, and that really breaks my heart. I care about him deeply, but this kind of jealousy and lack of trust is starting to damage our relationship.
How do you handle bf’s excessive jealousy?
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