My boyfriend notices pretty women when we are out?

I’ve noticed my boyfriend looks more at pretty women. For example, we were both on a bus and I sat next to a pretty girl. He looked at her and then I saw his eyes move down her. We were also ok a train and I sat next to a girl. He looked at her for a few seconds as I was sitting down. He only does this with attractive girls.
Is this just something to ignore?

My boyfriend notices pretty women when we are out?
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