Learn Portuguese (Portugal): Irrita-me muito que sejas tão ciumento. - It annoys me a lot that you are so jealous.

The phrase Irrita-me que expresses an emotion (annoyance). In Portuguese, when you express a feeling about an action or state involving someone else, the verb in the que clause must be in the subjunctive. Sejas is the present subjunctive form of ser for tu (you).

Why is the pronoun me after the verb in Irrita-me?

In European Portuguese, object pronouns typically attach to the end of the verb with a hyphen in affirmative statements. Because Irrita is the very first word in the sentence, the pronoun is never allowed to go before it, making Irrita-me the only correct option.

Why use a form of ser (sejas) rather than estar (estejas) for being jealous?

The adjective ciumento describes a personality trait, meaning a "jealous person" by nature. We use ser for permanent characteristics. If you wanted to say someone was just feeling jealous in a specific moment, you would use estar with the noun phrase: estar com ciúmes.

Why use tão here instead of tanto?