In French, you say “Je suis jaloux” if you are a male, or “Je suis jalouse” if you are a female.
The word “jaloux” is used for males, while “jalouse” is the feminine form. French adjectives must agree in gender with the subject, so it’s important to use the correct form based on whether you’re male or female.
For example, if a man is expressing jealousy, he would say, “Je suis jaloux”. Conversely, a woman would say, “Je suis jalouse” to convey the same sentiment.