Do guys stare at a girls chest intentionally?

this man is supposed to be a professional doing his job and he’s old enough to be my dad, grandad at a push (im 18) and mid-conversation he always glances at my boobs but today I spoken to him and he was legit staring while talking to me and he had like a shocked expression. I’m wondering if it was perhaps by accident before I start to think he’s a weirdo.. Lol
Do guys stare at a girls chest intentionally?
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