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It's pronounced "v", not "g". The ending "go" is always pronounced as "vo" (when it's really an ending and not the part of the root).

Don't worry. She didn't expect you to know what is polite in Russia and what is not and I bet she hardly understood anything except your boyfriend's name.
By the way, what country does you boyfriend...

It's not very polite in Russia to say "privet" (hi) to someone who is much older than you and is not your close relative (or at least a close friend). It's better to say "zrdAstvuytye" which is...