What does it mean if a guy says he doesn't know how to love? He shows endearing and affectionate behavior toward me and likes to be w/ me. Is it love?

I think he thinks he's incapable of love because he had a troubled childhood and said he never experienced love for real as a child. He feels like he's just here to be used by people, but he doesn't think that about me. He knows I genuinely care deeply about him.
What does it mean if a guy says he doesn't know how to love? He shows endearing and affectionate behavior toward me and likes to be w/ me. Is it love?
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