OK, theres at least 3 stories here you need to tell from start to finish.
my ex from years ago was weird... he dated for a few months before he ever let me into his apartment, and when he did, it was pretty odd. he wasn't quite as bad as you see on tv shows, but I could see him staring in an episode of Hoarders down the road.
don't ask me why, but he had no doors in his apartment. I never asked, and I tried to spend as little time there as possible. instead of doors, he just had sheets hanging over the doorways into the bathroom and bedroom.
the cat had an annoying habit of jumping onto people's shoulders and perching there. a little cute at first, but it would also do it while I was standing in front of the toilet.
but in general, Siamese cats tend to be very vocal and it was extremely annoying... my ex loved it because he suffered from crippling depression (which he also hid from me for the first few months of our relationship) and having the cat talk back to him helped for whatever weird reason. but to me, it was just nonstop annoying noise.