I'm a debilitatingly jealous person.
I'm concerned for you, why do you think you're a jealous person?
Because I have been cheated on before
It's understandable that your behavior might be affected after you have been cheated on but it's wrong to continually remain jealous to the detriment of your relationships. Being too jealous can drive people away and you will have trouble maintaining romantic partnerships. You should work with a therapist to help you move past your envy and calm your feelings of jealously.
Okay, I'll go see a therapist because you're nosy and can't mind your own business.
I was just giving you my helpful advice. I want to see you get better and to improve your relationships with others in the future. I apologize if you feel I was being intrusive.