It is my opinion that woman like a certain amount of jealousy.
For instance, on the a fore mentioned 90 Day Fiance, one of the guys took his Russian woman to the Hollywood Walk of Fame. He took pictures of her sitting next to certain stars, but she really wanted to see Johnny Depp's star. Which she did. Hanging out there was a fellow dressed as Jack Sparrow. I am sorry, Captain Jack Sparrow. Anyway, he was posing for tourists, and she wanted a picture. Normally, I would think they would put their arms around each other. Hey, this is her only chance to take a picture with Captain Black Jack Sparrow. No. He would not allow any contact at all. In the previews of the next episode, he was defining what kind of modeling she could do as she interviewed for the job.
That is too much. I would think that might push her away.
I had an ex who did not shave her pubic hair. Ever. She liked her power bush, and so did I. I was wondering about what fashion she had chosen, and when I took off her pants for the first time, even with full front panel panties, she still showed a lot of bush. She told me, near to the point when she left me, that she had accepted a date to go canoeing. I did not stop her, nor even question her about it. When she talked to me about post canoe day, she said "I think he liked me showing some of my pubic hair." I replied that I bet he did. She further told me she sat in front, probably so he could look at her butt. I responded that after eight months, I still checked out her ass. Never once did I tell her I was feeling a bit jealous.
Perhaps I should have. It would not have been strangling her, but it would have showed her that I cared. There may have been some doubt. I am not, however, a jealous person.
I would appreciate other opinions. How much jealousy is too much, how little is too little.