I have always encouraged my partner to be open and honest with me, as I am with her. I would love to know the intimate details of her past, and I will share mine if I can tell that she wants to know. I’ve been with plenty of partners that did not want to know anything and didn’t share any of their past - and those closed off relationships were short lived. I don’t understand someone being jealous of someone else that they never knew or was before my time with them.