That's interesting.. thanks for mentioning that for me.
It's been 7 years since I became a member here yet I only have 700 sentences so far, and am an ordinary contributor :D

> sorry.

Please, don't be sorry :) We're all learning and trying to make Tatoeba awesome every single day :)

> "colloquial", just like "formal" can be used both in spoken and written language. So we may have sentences tagged "spoken language" and "colloquial", others only "spoken language", etc.

In Portuguese, many people write in the so-called "spoken language" way, I guess.

Let me try to draw you a picture :)

For short, we can't say "Me sinto feliz." (I feel happy / I'm happy ) because "me" is called an "pronome oblíquo". In order words, we can't call it, syntaxly saying, "subject". That said, we should say "Eu me sinto feliz." (Eu = I)

However, despite formal texts, everybody writes and says "Me sinto feliz." and it's the most natural way to say it - even some grammars hating its existence hehe

But it gets more interesting: "Te amo." You should have guessed that the "proper" way would be "Eu te amo.", but **no one** ever says or writes this way except if an emphasis is intended.