sentence: An incredulous Roger learns that Alyssa has been with Diane all this time and it becomes apparent to them that Thomas, Amanda and Alyssa had orchestrated their meet-ups all along, about which the girls are extremely smug.
modified: fix grammar: An incredulous Roger learn that Alyssa have been with Diane all this time and it become apparent to them that Thomas, Amanda and Alyssa had orchestrated their meet-ups all along, about which the girls is extremely smug.