since he is your best friend

Since he is your best friend, I thought you would stay with him.
Como es tu mejor amigo, pensé que te quedarías con él.
Since he is your best friend, I thought he would be the first to call you to congratulate you on winning the prize.
Como es tu mejor amigo, pensé que sería el primero en llamarte para felicitarte por ganar el premio.
Word of the Day
scar