What's your opinion on jealousy in a relationship?

Some people think it's ok to have some jealousy as it reveals the other person and care, whilst some disagree saying it can become toxic etc. But what's your opinions? Should a person who loves someone be or show their jealousy? Or how can we balance it?
Is jealousy a sign of distrust? Doubt?
Would appreciate some good answers.
I think it's necessary in most case
I think it's not needed
Brings negativity so should be avoided at all cost
No idea
Select gender and age to cast your vote:
What's your opinion on jealousy in a relationship?
Post Opinion