A father of triplets killed when a car slammed into a crowded NYC sidewalk was waiting for his mother’s bus when he was struck — and it was a longtime friend behind the wheel. Michael Saint-Hilaire, whose daughter and sons turn 2 next month , was texting with his mom as she approached on the bus, uncle Jonathan Saint-Hilaire told The Post. “I’m here waiting for you,” the victim wrote, according to the uncle. “He was waiting for his mom. She spoke to him at 5:53, and the crash happened at 6.”