My heart = Meu coração
coração
The problem in Brazilian portuguese is o problema.
Harmony is harmonia in Portuguese. (Brazilians speak Portuguese not "Brazilian").
There isn't an equivalent name in Brazilian Portuguese for Barry.
namorado in Brazilian portuguese
In Brazilian Portuguese, "welcome" is commonly translated as "bem-vindo" for a male or "bem-vinda" for a female.
How are you in portuguese(brazilian) is "Como vai você?"
Eu sou brasileiro.
The same as in Portuguese: Casa.
how do you say girl in Brazilian portuguese
In Brazilian Portuguese, you can say "Eu te odeio" to mean "I hate you."
Obrigado is the portuguese word for "thank you". There's no brazilian, there's only portuguese