Break Up & Divorce

Why does he still wear a wedding ring around extended family?

My boyfriend had his divorce finalized about three months ago. After they’d already split, he an his ex had both gone to his family’s Thanksgiving around the time it was finished. He told me they both went to announce to the family they’d officially be divorced the next week. Of course family photos were taken during that holiday and they both still had their rings. Ok fine ur still legally married maybe just being symbolic.
Then a month ago there was a gender reveal for his brother out of state. His ex knows he’s dating me now so sometimes if she’s around for something she’ll send me a snap from his phone then block me to just be a bitch. I thought he’d gone alone but toward the end of the gender reveal trip I receive a snap from her. She still has her ring on whatever she’s crazy and tries to do things to pretend they’re still together. But when I looked at the pictures from that trip that have him in them, he is wearing a ring. I asked him why she was even there and he said he didn’t want her to go.
Now the reason I’m not flat out going crazy is that HE NEVER EVER WEARS A RING OUTSIDE HIS FAMILY FUNCTIONS. He told his brothers about me but not his mom bc tbh they barely got married like a month before he found her cheating and broke it off, so I’m thinking he may not want the family to feel like he’s moved on too soon. Or maybe he just told the immediate family and not cousins aunts grandparents etc. They don’t even live together and she calls me his girlfriend even tho she doesn’t like me. I don't know just him wearing it at the family event a month ago gives me pause but also I understand there could be extenuating circumstances

Why does he still wear a wedding ring around extended family?
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