<Tr> <Th> 79 </Th> <Td> 15 </Td> <Td> "The Stinsons" </Td> <Td> Pamela Fryman </Td> <Td> Carter Bays & Craig Thomas </Td> <Td> March 2, 2009 (2009 - 03 - 02) </Td> <Td> 4ALH15 </Td> <Td> 11.08 </Td> </Tr> <Tr> <Td_colspan="8"> The gang suspect Barney has a girlfriend after he suddenly leaves MacLaren's but realizes he has a wife and a son . </Td> </Tr> <Tr> <Th> 80 </Th> <Td> 16 </Td> <Td> "Sorry, Bro" </Td> <Td> Pamela Fryman </Td> <Td> Craig Gerard & Matthew Zinman </Td> <Td> March 9, 2009 (2009 - 03 - 09) </Td> <Td> 4ALH16 </Td> <Td> 8.51 </Td> </Tr> <Tr> <Td_colspan="8"> When Lily and Marshall get wind of the fact that Ted's college girlfriend Karen (Laura Prepon), who they always hated, has moved to New York, they try to persuade him not to contact her . </Td> </Tr>

What episode did ted get left at the altar