Why does a guy act cold (er) after a date that went great according to himself?

Dilaravlrdd
Im talking for a month with a guy , everything went well until I noticed he is a negative thinker about love and marriage. He is 30 and sometimes it feels like he is desperate for finding a spouse. He asked me on a date and it went well. He kissed me and showed lots of affection and interest. The next day after our date however he tells me that he is a bit down so he is taking a little break. I agreed to give him space, in the evening he called me and we talked and then he tells me that he lost all hope in love - mind you this is the day after we had an amazing date - he told me that he even would want an arranged marriage. I tried to talk him out of his negative thinking but felt uneasy because it felt like I was the problem and that the date wasn’t as good, even though he said it himself it was a great date and he looked happy. Anyway I tried to brush it off , he asked me for another date and again everything went well , but the next day he doesn’t text me all day. I knew he was at work but even if he is at work , he still texted me in the past and made effort to say that he is having a bad day or a busy day. So I didn’t hear from him, but he called me late at night and asked for my day and I asked for his. After That I texted him if something was wrong because he acts so weird after a date with me, I told him I feeel that he is emotionally detached and that I don’t feel even a bit of warmth from him towards me or a bit of a positivity look towards love, because of me. Because we were getting so close over text and then on the dates we also were close but after the dates he becomes very “weird”.
Hé once told me that he doesn’t get feelings fast and that he is a perfectionist. He is looking for the perfect woman and that he can end things quickly with her even though they became close mentally and physically with each other. Could it be that he becomes distance because of this or that something is not going smoothly in his life? Or because of me?
Updates
+1 y
Thank u all for the advice. Update: I tried talking to him about this coldness after the date , however he ignored my texts and started talking about something else , which clearly means he didn’t care about my feelings. I told him I didn’t find it nice of him to ignore my texts , but that’s okay cause now I know where I stand with him.
The guy got all panicked and asked me when he can call me to talk about it. I didn’t open the chat anymore, Im going to trust my intuition instead of my heart
Why does a guy act cold (er) after a date that went great according to himself?
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