Is it normal husband can't control himself when he sees young hot girls

My 60 year old husband can't seem to control himself whenever he is around, or even walks by a young girl who he finds attractive. He becomes nervous, hums to himself, giggles and smiles, and eye fucks them. I pick up on the girl's discomfort.

As a young girl, I remember when old men looked that way at me and it was very creepy! Especially if they were with their wife. I am attractive for my age, in shape, and turn many heads myself, but with men of a more appropriate age.

I am not jealous of the girls, in fact I look at them as if they are my daughters. I am ready to leave him over this. He hasn't acted on it as far as I know, but he flirts with them, and given the opportunity, I believe he would. I just don't want to be with a pervert. is it normal that I feel this way?