My rich friend came.
answer: There's probably more punctuation than you have supplied."Vino mi amigo rico" is, indeed, "my rich friend came". But I'm guessing the original had a period after amigo and a pair of explanation points before and after "que rico". That would be "How rich!"...not a literal wealth, but more along the lines of "Can you believe the problems that caused?! Image the look on their faces when he showed up!"
Que pasa, mi amigo?
cuyo, mi amigo
Que pasa, mi amigo?
Me alegro de que tú eres mi amigo
Que tengas un dia bendito, mi amigo
My special friend that you like a lot
Pues eso, que mi mejor amigo se llama Diego.
mi mejor amigo - my best freind
Que / quien fue / era / fuera (fuese) mi mejor amigo, a.
"What you and your friend want to do" is literally "Lo que mi amigo y yo queremos hacer." If you want to say "My friend and I want to... " that would be "Mi amigo y yo queremos..."
Mi Amigo was created in 2002.
Translation: 'Why did my mother come to live with me?' (Although strictly speaking, there shoulkd be an accent on the 'e' in 'que', to make it mean 'Why...?' Alternatively, 'Porque' (one word, without an accent) means 'because, so: 'Porque mi mama vino a vivir conmigo' = 'Because my mother came to live with me.'