just tell them that you're uncomfortable with that. as easy as that. elaborate it, say sorry, and thank you.

’Can you stop talking about my ex? I don't even care about him anymore.’ I’ll say that.

“gak usah bahas dia dah, gak penting.” i'll say that.

"I'm sorry but can we talk about something other than that? Not really in the mood to hear their name anymore"

"Can you stop talking about my ex? I don't even care about her anymore." I will say it directly without beating around the bush.

Coba kasih tau aja yang lu rasain? Jangan kejebak sama kata gak enak. Kalau gak kasih tau yang ada malah ga nyaman terus perasaannya. Better ngomongin ke temennya sih.

I'll tell them...