Not officially FIL but boyfriend's dad. Will refer as FIL throughout for ease.
Been together six months. FIL has a lot of money and likes to remind everyone of this on the daily. Comments such as "Oh, that reminds me, I just bought this [item worth 100k], do you want to see?" and will then pass pics on his phone around the table for everyone to look at said item. This will happen in various forms each time me and boyfriend eat with them.
Boyfriend lives on FIL's estate (he pays rent)/ (has said he will move out due to recent events) but not with them, so PIL are unavoidable.
My boyfriend and his ex had a bad ending, and my FIL is completely hung up on her. Not exaggerating when I say FIL will bring her up "as a joke" each time I am there. Comment will usually be something like "Saw X's car the other day, going to smash it up next time!" or "Spoke to X the other day" (he didn't) "she said she's going to pop round and say hello to us all, ha ha ha ha" and so on.
Another time I told FIL I was going to look at a certain make of car. He disagreed with my choice, I then said I like the car and don't agree with his opinion, and he turned to boyfriend and said "Can you get the old one back, she never used to disagree with me?". Cue mad laughter from FIL and no comment from boyfriend.
Boyfriend is not good at defending me and it took me saying something to him (along the lines of, Would you mind saying something to him, his comments make me uncomfortable) for him to step up.
My FIL's other thing is to constantly remind of all he does for people. For example, if I stay for dinner, he will say to me "Blimey, you come to my house, eat my food, use my WiFi, anything else you need while you're here?!". And so on.
Boyfriend got me a necklace for my birthday, one that I had previously told him I loved, and while we were eating, FIL said "That necklace a birthday present was it? [Boyfriend] isn't very good at those"
I asked what he meant, saying it's a lovely present trying to stick up for boyfriend, and FIL said "But it's not a lovely present though, is it?".
I turned to boyfriend to ask what he meant and it transpired that boyfriend had asked FIL to swing by the shop and pick it up for him.
I though this was so nasty and just can't comprehend why he wanted to belittle boyfriend (and me) in this way, and so randomly too.
After that, FIL said another comment about the ex GF, something nasty and to provoke me and I just burst into tears. I'd had a shit week and couldn't stop myself. Soon as I was crying, FIL started saying over and over how I was in his house and if I didn't like what he was going to talk about then I should get out.
At no point did anyone else at the table stick up for me.
Boyfriend and I have been butting heads about it since, I feel he lets his dad treat him abusively (he does, lots of other nastiness goes on) and he also hasn't stuck up for me and stood up to his father.
I've explained to boyfriend that while I'll be cordial, I have absolutely no intention of making any type of effort with his family from here on out.
Sorry it's a long one, but, AIBU to do this, or should I close my ears to my FIL and continue as we were, going for Sunday dinners etc. at theirs for the sake of boyfriend?