Can I block these women on Facebook who keep messaging me about a guy we all have dated? I feel uncomfortable and told them I don’t want to talk?

There’s a FB group I’m in where we can ask if we’re dating the same guy since we live in a huge city. I didn’t message with them for like 1 whole day and they asked me if I’m doing ok. Like wtf. Anyway, these women and I have been messaging for like over a week about it but I really don’t want to talk about this anymore. Maybe a couple days are fine to talk about these sorts of things, but I’ve moved on. I don’t think the convos are productive and just venting about how much we dislike the guy. I am really not sure how to handle it. I messaged them that I don’t want to talk about this anymore and they keep continuing the convo and talking about if any of us have STDs and it’s just weird. This one girl is mad that the guy took me to really expensive places and asked me to be his girlfriend and I’m 26 and she’s 35. The guy is 39. Anyway it’s weird again like I said and I don’t want to engage with these women.

Can I block these women on Facebook who keep messaging me about a guy we all have dated? I feel uncomfortable and told them I don’t want to talk?
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