Hot mess

Ok - I have been dating this guy for 8 months and we had a romantic evening with dinner and night in a hotel. I couldn’t spend the night - and after sex and cuddling I asked him to walk me to my car. It was after 11pm and the car was in a garage which I found scary. He actually said no. He told me that he doesn’t ask me to walk him to his car when he leaves my house. I just walked out of the room and left a sweater I couldn’t find. When I got to my car - he texted me that he was turning off his phone, that it was nice knowing me, and that my sweater is in the lake. WTF? I feel like I am in the twilight zone. Who does that and who wouldn’t walk their GF to their car??? And to send that text? I am so disappointed and disappointed in myself for ignoring so many red flags.