Would you let your partner go on a "far away" trip with just guys or girls without you even if they say they are just friends?

would you let your partner or someone your dating go on a trip vacation with friends of the same sex let's say just girls going with one guy or the other way around just one girl going with just guys and you're not going with them. even if you know the guys or the girls and you guys are all friends of yours and your partners. Would you still allow your partner to go with them and for you to stay behind? Or would you be uncomfortable since.
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+1 y
Like " one girl goes with only guys " or the other way around "guys going with just girls" on the trip and you had to stay behind.
Would you let your partner go on a "far away" trip with just guys or girls without you even if they say they are just friends?
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