That's okay, Lost. You'll catch on about IB when you stick around and learn more about MB. Doing things separately from your spouse is absolutely fine so long as it is POJA'd--that is not IB.

IB is only things you do without considering your spouse and/or blatantly disregarding their feelings about it. It's a big difference.

Marriage is the triumph of imagination over intelligence. Second marriage is the triumph of hope over experience.
(Oscar Wilde)