What are appropriate consequences?
A BS can't legally beat, starve, or imprison a WS in most jurisdictions. A BS can't throw the WS out of the house, if the WS is an owner or lessor. The BS can't take their funds or car keys without the WS's consent. In any case, large numbers of people and a tremendously large portion of WSes never expect to be caught, so consequences don't do much to prevent infidelity, so consequences after the A are sort of pointless.
After a WS has cheated, the only legal consequence that I can think of that BSes can impose is D - but many BSes aren't sure that's their best course of action.
IMO, it's best for the BS to think about their own situation and options and not rely on general principles. Many BSes always thought they'd dump a cheater, until they have to make a choice - and then they realize dumping a cheater isn't best for them.
My reco is for the BS to ignore the very reasonable desires for justice or punishment for the WS or revenge. First, the BS should, IMO, focus on what they want. Then figure out how likely it is to get what they want. Then figure out consequences and justice. If the BS wants D, then they can get some justice by choosing D.
The fact, however, IMO, is that there is no justice for the BS. No matter what, the BS has been betrayed. That evokes anger, grief, fear, and shame. To heal, the BS needs to process those feelings out of their body. That is a crucial step in surviving, and thriving after being betrayed is the best revenge.
fBH (me) - on d-day: 66, Married 43, together 45, same sex ap
DDay - 12/22/2010
Recover'd and R'ed
You don't have to like your boundaries. You just have to set and enforce them.