Arnold Schwarzenegger Used Santa Monica Office for Romantic Liaisons

Arnold Schwarzenegger had numerous, late night rendezvous with various women at his Santa Monica office building ... and some of the women were mysteriously carrying legal-sized manila envelopes ... sources who were present tell TMZ.

Arnold has now come forward and revealed he did indeed have a baby with a member of his household staff approximately 10 years ago, and finally revealed the secret to Maria after he left the governor's office this past January.

TMZ heard the story of the baby last week, but members of Arnold's team threw up a wall and claimed ignorance.

Now our sources say there were other women -- at least two of whom repeatedly came to his office at around 1 AM with manila envelopes and would spend hours there. Sources familiar with the office when these women were coming in -- approximately 5 - 7 years ago -- say there were several bedrooms in the suite where they would go.

People familiar with Arnold's operation tell TMZ ... Arnold kept his home staff and business staff separate. The woman whom he impregnated was a member of his household staff.

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