109: What can our behavior signal to a romantic partner?

Questions for tonight are as follows:

A listener's husband spends money on certain displays but not others - what does it mean?

How does a 10-year married couple navigate being swingers when one of them no longer wants to do it? 

Why do some men feel guilty or nervous about Valentine's Day?

Why do romantic partners act surprised when their spouse/partner leaves despite threatening to do so for a long time?

Why does it feel so devastating when a spouse cheats?