What started this fighting? Is it the silent treatment fighting or if her hausbsnd sees his dad hes going to punch him?

Very noisy lol.

They're married, so, it isn't unfair. They are one family.

To be fair, she married him, not his family. I'm all for solidarity and a good relationship with the relatives, but there are different situations, in many families it's impossible to get along.

24 - to also be fair she did willingly take the journey to the in-laws with him as well to be put in that environment. ;)

Or propose a three-some... If you can't beat 'em, join 'em.

#6, I agree, the OP can get in some "sexy time" and a hole new series of fights can begin.

Just goes to show ya, marriage isn't always the way! Clearly her sister-in-law is happier with her boyfriend!

Just because she slept with him doesn't necessarily mean she'll leave her husband for him. It's sex, not anything serious.

#39 Who says OPs sister in law is married? It is probably OPs husbands sister, and nowhere in the FML does it say she is married.

Or maybe Op's sister in law was fighting her boyfriend. Op just couldn't hear the muffled screams over the squeaky mattress.

Pumpkin?