Eli Manning is a man of his word. Spies said the Giants QB popped into Bill’s Food & Drink in Midtown with a male friend recently, and then promised the staff he’d come back to try a proper meal. Days later, Manning returned with his pregnant wife, Abby, for a cozy lunch of chopped salads and fries. “They looked really happy together,” said a spy, who added the whole dining room was craning necks to get a gander at Manning. The couple, who already have a 2-year old daughter, Ava, revealed in March they’re expecting a second child.