<human>: Well, there might be a simple answer for my question, but this situation is bothering me.

My boyfriend shared a post on one of our mutual friend's timeline. I saw that from his facebook that he specifically had marked me and his sister not to see that post. The post itself was a news article concerning said friend's property (news that I was already familiar with) and when I asked him why is it hidden from me he said he didn't know how it happened. He told me the only explanation he could think of is that he must have hit the 'hide from close friends' thingy.
The thing is that he has a lot more close friends than just me and his sis. Something similar happened couple of weeks ago as well.  

He apologized profusely, insisted that he had nothing to hide from me and that he had no idea how it happened. We already use each other's gadgets freely and he offered to give me all of his passwords to prove that he has nothing to hide. He asked me to trust him. I feel really bad for not being able to let it go and trust him. 

So my question is kind of a facebook question. Can this happen that one accidentally hides a post from two specific friends? Twice? Does anybody know how that works, cause I sure don't...

Can you provide a brief overview of the text?
<bot>: BF has hidden two facebook post specifically from me. He says he is not doing that on purpose. Can facebook by accident do that? Or is my BF lying and hiding innocent posts from me?