Did jealousy make him end our close friendship over unverified dating rumors?

Imagine a friendship with a female coworker marked by playful banter, teasing, shared jokes, and personal disclosures. A connection exists, and both seem to enjoy it.

When she approaches him, he engages and jokes, appearing to value her company. He has hinted at liking her but never stated it directly. He requested contact when she withdrew, yet later questioned her silence once she resumed talking.

Some behavior might suggest jealousy. For instance, he watches her from afar while she laughs with other male coworkers. He will also watch her throughout the workday he has even questioned her about a guy he saw her talk to like why is his relationship to her.

Now imagine he messages her that multiple people claim she told coworkers they are dating or going out. He says he has enough proof, tells her not to deny it, and ends the friendship without asking whether the rumors are true.

Here are my questions:

Would you end a friendship based on what others told you without hearing your friend’s side?
1. If you valued the friendship, wouldn’t you want direct communication before walking away?
2. Could intense jealousy, insecurity, or avoidant attachment play a role here?
3. Can someone enjoy emotional intimacy, vulnerability, teasing, and attention yet avoid direct talk when conflict arises?
4. Does watching someone interact with other men—especially after ending the friendship—suggest unresolved feelings, jealousy, or nothing at all?

If you were the woman receiving that message, how would you handle it?

I’m interested in hearing from men especially, but women are welcome to weigh in too. I want honest opinions, not just agreement.
Updates
6 d
He asked her to the movies out of nowhere and when she asked him why he asked her he got defensive and said, “ What you don’t want to go anymore”? Mind you they have known each other for a year and a half.
Did jealousy make him end our close friendship over unverified dating rumors?
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