Why most guys aren't sure about their feelings?

I dated now a guy for the second time. We both felt attracted. And we met each other from a datingapp. However, I asked him if he intented to delete his app. He said: I don't know what I wan't, for now, I just want to keep it. So, is it my mistake to expect to soon? We decided to go on a third date. We both never had a relationship before. But guys, is it normal that he don't want to delete?
Why most guys aren't sure about their feelings?
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