During this time, however, it's best practice to stop using joint cards and make future purchases using personal funds. (valuepenguin.com)
protecting your own credit rating by freezing or closing joint cards and by blocking your spouse's access to other joint credit such as a home equity loan; (rosen.com)
Your credit isn't merged, but it is interdependent and you should get joint cards and individual credit cards. (videocreditscore.com)