Formal:
* Eu amo você. (pronounced: eh-oo ah-moh vo-seh) - This is the most common and formal way to say "I love you."
Informal:
* Eu te amo. (pronounced: eh-oo tyeh ah-moh) - This is a more common and informal way to say "I love you." It is used with friends, family, and loved ones.
* Amo você. (pronounced: ah-moh vo-seh) - This is a shorter and more informal way to say "I love you." It's similar to "I love ya" in English.
* Te amo. (pronounced: tyeh ah-moh) - This is the most common and informal way to say "I love you," especially in romantic relationships.
Other expressions of love:
* Eu gosto muito de você. (pronounced: eh-oo goh-stoh moo-ee-toh dyeh vo-seh) - This means "I like you very much." It is a less intense way to express love.
* Eu te adoro. (pronounced: eh-oo tyeh ah-doh-roh) - This means "I adore you." It is a stronger expression of love than "I love you."
The best way to choose the right expression depends on the specific situation and your relationship with the person you are talking to.