How to deal with jealosy of my fiance's students?

My fiance is a University professor and he likes to be perceived as a "cool professor" and also helps the students apply for scholarships outside class, this last part is not his duty but he does it because he wants.
Lately this situation is making me feel jealous especially when I see young girls dressed provocatively around him or when I hear the stories he tells me to the point that I wish he had another job.
How do you think I should deal with this?

His stories are about his colleges flirting with students. And how his students love him. Like for example he told me one girl nearly cried in his class because it’s the end of the year so they will not do anymore lessons with him.
He told her that she can come to his class next year too. He also tells me how some students were dressed provocatively. And an email a student sent him saying something like thank you professor you’re so good and smiling emoji. I think he loves the attention and being a “cool professor”.

These girls are acting inappropriately and immature. Their clothes alone are very inappropriate for university. His stories are also about his colleges flirting and he also suspects sleeping with students. He also tells me that some students are sluts and make him uncomfortable because of the way they dress.
He tells me without me asking.

My reaction is trying to play it cool at first, but it’s difficult to hide my feelings forever.

I’m not comfortable to tell him that there's something that bothers me because he isn’t doing something which can be considered as cheating. What can I tell him that I want to change if there isn’t anything he’s doing? I worry about the fact that all our lives he will be a professor and when I’m older too.

Some girls will try to seduce a professor just for the grade. And they dress very provocatively in a way that no one in a job place dresses.

When I knew my fiance he was a nerd phd student. He was shy and didn't know his value.
How to deal with jealosy of my fiance's students?
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