Living with a person with possible BPD, tips?

I didn’t know my ex-boyfriend has BPD (still it hasn’t been 100% confirmed, but as far as I know it’s like that)...he never mentioned it to me, I found out through a common friend after we’ve already split up…
We started a relationship and last 1 month. At the start he was very fast, planning everything, like if he was completely sure that we were meant for each other. Said I love you after 3 days, that he wanted to make my life a paradise and that he wanted to be with me for the rest of his life… everything seemed too perfect to be true. After I fell in love with him, he started becoming distant and selfish, he started changing his behaviour, like saying “I don’t like to chat online and I need some time on my own, so tonight I won’t sleep at your place”. I didn’t understand why all that sudden change, thought it was because we already had sex and he lost interest about me and because he was going through a recent break up and divorce. I felt unvalued and lonely, and during that period, I split up with him twice because I am a very emotional person and he end up being cinically rational. One day he told me “the reason I stay in this country is because of you” and few days later he told me “I want to apply for a job in XXXX (in a country from another continent) as I’m fed up of my current job”; I got so sad when I heard that, because he said that he wanted to be with me one day and that I was the reason why he was staying where we currently live, and all of a sudden, he changed his mind. After he saw I was upset and disapointed about it, he yelled at me saying “Do you really think that after few weeks of relationship I will quit my dreams for you?” and he also stated “I did that for my previous gf’s and look what they did to me, LOOK!” “I would never quit my dreams for anyone else since you and even after you”.

He started behaving like a victim of his past, and end up saying that he couldn’t completely trust me because all his previous gf’s and ex’s have had cheated on him and split up with him. That night was the last one I could stand it, had him next to me, but I felt completely lonely and misunderstood. I thought the problem was mine, to be honest, and I felt bad about it and sorry for him. But he always end up texting me, not in a loving way, but in a “I care” way, so I was so stupid to keep in touch with him. Recently he needed a place to stay, and as I still had feelings for him, I offered him to stay in my apartment for a while until he finds a place on his own, even though we aren’t in a relationship, nor dating. I told him, that even if I splitted up because I felt like if he didn’t really loved me and so, I still have true feelings for him, etc… He said that he has feelings for me too and that we would see what happens: he said we should go slower now to know each other better and all that, but after the news his friend told me, about the BPD, I don’t want to be emotionally involved with him anymore, I’m scared, and I don’t want to end up depressed in a corner… He told me he was going to therapy because of his past, but when we started dating, he skipped it all days, and don’t know when he is going to go there again. At the moment he is spending some time with his family, so I’m alone in my flat. But don’t know how to say to him: “I need you to go out of my apartment” without hurting him or making him worse… Yesterday he messaged me in a kind of “warning sms” saying that my comments don’t make our situation better… and as I was a bit pissed after discovering all the BPD related rumours, I replied with a “Don’t worry, I don’t want to have a relationship with you anymore”, he asked me why, and I said “because of different reasons”. Funny thing is that I still have feelings for him…