Honestly, I don't really know what to do about it. I told him that it was really insensitive of him to buy something like that and to expect that it would help him understand how to deal with me. 

The package came in and I asked "what is this?", he said it was private and that he would show me later. Me assuming it was smut or something, I was totally okay with him showing me that. We went upstairs, and he very eagerly showed me the book. I didn't know what to say, so I just said "I'm going to take a shower" and left it at that. Also, I couldn't say anything anyway because our new roommate had literally just moved in and was downstairs, definitely could have heard me talking about it. 

I just don't think he should have even shown me in the first place, in the moment I felt extremely violated for some reason and that a boundary was being overstepped. I felt that I was being simmered down to my having BPD and that he feels as if every emotion I exude is an outcome of BPD. I just don't really know what to do. He said he bought it after our fight last week because he wants to "improve emotionally", I do think that is a great idea, but my emotions are more than just my BPD. I've also told him in the past that he cannot learn about people by reading books, it's about experience... I guess he forgot about that one. It's just so unbelievably insulting to me. 

Am I wrong for thinking and feeling this? I feel like I can't even be myself now, especially now that he thinks everything I'm doing or saying is just me being borderline. I don't know, any advice or anything would be helpful. Thank you.