nevertheless, we know the nature of our friendships, and we know when the match is a bad one.
e.g. she'll send me off to drink beer with my nerdy "philosopher" friends. in turn i'll quietly make myself absent from certain family functions or movie excursions.
we also hang with couples where we like one of them but the other not so much, and we wish we could isolate the likable one and skip, yes, the asshole

eg off the top of my head i can name 3 couples: one where one is mellow and relaxed but the other one is mean and controlling; then a different one where the boring extrovert takes over the conversation and silences the interesting introvert; finally another where one spouse would put our friend down in front of others (they're now divorced). oh, there is a fourth one where one partner just disappears when we visit, which-- is awkward, but we don't mind it so terribly

of course one has preferences, but it's hard to make them obvious. you can't split a couple and say "hey, can you leave your annoying partner at home?" one just can't. that invites their combined wrath. social life is full of landmines.
best case scenario is to engineer a situation that "selects" one partner so that the other one stays at home or whatever. or you show up to visit last minute while one of them is at work

we're also well aware that one of us can be the asshole to a third party--most of the time that would be me (the blunt one)

all situations need a bit of play and the right social lubricant (not necessarily alcohol). i'm not the most adept at creating this sort of situation, so i'm often frustrated in ky efforts, but im a fairly decent observer of human behavior and can easily hear a discordant note in the music. some strings need a lot of tuning!
--
eta: actually after writing this i realize with our common friends one of use is closer than the other, so we often give each other the space to hang with the other, so much so that i wasn't fully aware of it, it just happens. i mean, it's not a
0/1 thing, but a whole gradient...