It's okay to have boundaries but you need to enforce them. Your boundary here would be that because of your insecurities you won't tolerate your partner entertainming the interests of other men, and if she can't/won't respect that, them you'll be breaking up with her.
Tell her she's free to move there on her own. Maybe it's time for a second divorce. You shouldn't have to move away from your kids and grandkids in favor of hers.
In your experience with him, why is it nude to bring it up with him?
Is there any other reason than you bringing the topic up before?
It's okay to have boundaries but you need to enforce them. Your boundary here would be that because of your insecurities you won't tolerate your partner entertainming the interests of other men, and if she can't/won't respect that, them you'll be breaking up with her.
Tell her she's free to move there on her own. Maybe it's time for a second divorce. You shouldn't have to move away from your kids and grandkids in favor of hers.
Abort mission