Friends should trust each and not be jealous of each other.

朋友之间应该互相信任, 不能互相疑忌。

youdao

You need to feel free to hang out with and talk to each of your parents without the other parent acting jealous, hurt, or mad.

你应该可以随心所欲地跟父母中的任何一方出去游玩或者交谈，而不用担心另一方会因此嫉妒、受伤或抓狂。

youdao

You asked if we were ever jealous of each other.

WSJ: Best of the Web Today: Susan Patton Told the Truth

And, of course, it makes a better press story for sisters to be jealous and hate each other.

NPR: A Conversation with Lynn and Vanessa Redgrave