Well it can be. To me, my spouse's sibling's husband is just...my spouse's sibling's husband and nothing else. Some vague acquaintance I may vaguely see once ev

Well it can be. To me, my spouse's sibling's husband is just...my spouse's sibling's husband and nothing else. Some vague acquaintance I may vaguely see once every decade when someone die or get married in my spouse family. It really depends how tight knit families are and how families are spread accross the world. I have to take a plane and cross some borders in order to visit my parents or my sibling's and same applies to my partner so there is that.