How do I know if my boyfriend is serious about me?

He used to be possessive of me but recently he seems like he’s not jealous at all. Also he told me he’s not shy around me at all and he’s not. He does buy me food every time and very gentlemen with me. And he likes to feed me. Is very nice to me. I see him looking at girls a lot.

How do I know if my boyfriend is serious about me?
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