It's peculiar, this happens on threads about stag trips to other known sex-tourism hotspots as well.
OP: My partner's giving me the silent treatment, avoiding me in the bedroom, won't make eye contact, denies anything's wrong.
MN: How's he behaving around other people? What preceded this mistreatment?
OP: Fine & dandy, he's only blanking me. He's been on a stag trip.
MN: There's nothing wrong with Amsterdam/Tallinn/Bangkok! Lots of men go there for the architecture! Perhaps he's got a tummy bug or [insert other unlikely cause of unilateral shit behaviour.]
How is that supposed to help an OP with a suddenly dismal relationship, exactly?
Couldn't people try and keep their travelogue contributions for the travel threads, and make relationship comments on Relationships?
Sorry, OP, no specific advice for you except to be tougher and more persistent than you ever thought you could be: you don't deserve this treatment and do deserve to know why he's giving it out.