ETonline has your exclusive sneak peek from this Thursday's all-new episode. The first look scene (above) features a mother and son heart-to-heart that quickly escalates into a heated argument.
Barb (Felicity Huffman) is happily surprised to discover after the funeral that her son Mark (David Hoflin) is engaged. However that excitement instantly fades into confusion when she discovers that the twosome has been dating for more than a year and this is the first time she's hearing of her future daughter-in-law.
Take a look at the video above to discover the real reason that Mark withheld the truth from his mom.