NO! You are absolutely not confusing him.

This is the best possible way to do it. . .and he will be fluent in both eventually.
There is TONS of research regarding this issue--all saying that having two languages spoken at home is the best way for a child to become bilingual. It's not always possible--but when it is it's great.
He'll pick up English from television, from the playground and from hearing it elsewhere. Remember too that most kids elsewhere speak at least a couple of languages. . .