Formal:
* T'estimo: This is the most common and formal way to say "I love you." It's used in all contexts, from romantic love to familial love.
Informal:
* T'estime: This is a more informal version of "t'estimo," often used between close friends and family members.
* Et vull: This translates to "I want you" and is used to express romantic love.
* Et quero: This is another way to say "I love you" but is less common than "t'estimo" and "t'estime."
Other options:
* M'enamoro de tu: This translates to "I fall in love with you" and is a more poetic way to express love.
* Estic enamorat/a de tu: This translates to "I am in love with you."
The best way to choose the right expression depends on the context and your relationship with the person you are talking to.