Just need help processing this situation

So I started talking to a guy, who had broken up with his last relationship about 2 months ago. I asked him initially if that meant he was emotionally unavailable and he said no, he is emotionally available. So we continued to talk and he would talk about future plans etc and finally met up. We connected great, got along, flirted a little, and he held my hands as we walked through some trails. When the date was over we kissed goodbye a couple times. He then called me as soon as he got home and we continued talking. He asked if I wanted to go out with him the next day, so I said yes and we met up again. He held my hands, gave me a quick massage, asked questions about me, kissed me, had his arms around me, kissed my hand in the car as he was driving. The vibes were great. He called me beautiful and told me he liked me. And we had plans the next weekend to go out to dinner. He also told me that he was looking for someone to start his life with etc. So as far as i knew we were on the same page. The next day, he texted me telling me that he has been feeling weird almost emotionless and he thought it would be easier to move on, but now he feels like he has a wall up that is gonna take a while to come down. We talked on the phone about it, and he explained that I have a great personality and we get along and I’m very attractive but that he knows I want a relationship and now he doesn’t know if he’s ready yet for that and doesn’t wanna waste my time. I’m the first girl he has gone out with since his ex, and he says he thought he was ready but now going out etc brings back memories and it feels wrong even though he is single. He says he isn’t going to get back with her and hasn’t talked to her and He suggested we keep talking and getting to know each other and going out but maybe wait until next weekend to go out. He then said I could reach out to him and I told him I understand but I am not going to reach out I am going to give u space to work through these emotions and you can reach out to me whenever. He said okay we will talk soon and we got off the phone. This all happened Monday. So then 2 days (Wednesday-today) later he messages me with small talk asking how my day was etc. I guess I am just confused, like I understand he isn’t ready to move on yet, but I don’t understand how he could’ve been so sweet and affectionate and told me he liked me and then less than 24 hours later told me he felt weird now and not ready. I’m just trying to process everything. And also now he is reaching out but idk if it’s just to be as friends or take things slow etc. I know I should just move on and I am, but it’s the thought process behind this that is making it hard for me.