Why do guys that have feelings for a person and the other person returns their feelings not want to take the next step in forming a relationship?

Is commitment scary? I’ve had a guy interested and says he loves me and all but won’t actually be in a relationship with me. I felt used. I understand the whole “not ready” aspects, but he would act like he was so it through me off. It didn’t help that I had to figure out he’s not ready cause he never told me upfront.
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+1 y
He does want a relationship with me but he’s simply not ready.
Why do guys that have feelings for a person and the other person returns their feelings not want to take the next step in forming a relationship?
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