My sister confided in me last night and obviously I can't talk about this irl but would still like to have people's takes on this.
Background: They both work ft, two kids (school age), not wealthy but not poor. BIL is quite rigid but always polite and generous for gifts for birtdays in the family.
BIL does the weekly grocery shop (he has always insisted on doing this acc. to sis). Now he has admitted that he doesn't pay for all the groceries (selfscan). They were having an argument about money/spendings this week and he told her that he was doing loads to save on spendings. I was quite surprised when my sis told me because I always had him down as a "rule-follower" but this itself didn't seem to bother my sis so much her argument being that they can never prove he didn't "forget" to scan. The worst to her was that he kept a fucking log on how much they had saved due to his "forgetfulness" eg stealing per week/month/year!!! I mean, who does this!!!??? Imagine the time it must have taken him, and why? Like a serial killer keeping souvenirs. I told my sister that I couldn't come over to theirs this Saturday because I just can't stand to face BIL right now. I mean I will be able to see him later but I need to digest.
My sister got all mad at me and said hurtful things about my DH and that if I didn't come this Saturday I don't ever have to bother.
Should I suck it up and go although I can't stand to look at BIL right now (AIBU) or am I justified in wanting some time to digest this before I see him again (AINBU)?