Mr. and Mrs. Gilbert knew their son's character well so they didn't believe him when he said he had a girlfriend. Now that he had brought her back, they were very happy.
Although the Rivers residence was not as grandiose as the Gilbert residence, Mr. and Mrs. Gilbert were not the stuck-up type who insisted that their son marry someone at their level or higher. As long as the girl's family background was clean and she could control their son, preventing him from messing around outside, Mr. and Mrs. Gilbert weren't too fussy.
At the dining table, Calvin Gilbert put on a good show - he kept putting food onto her plate, especially her favorites. He even de-shelled the prawns and de-boned the fish for her.
When Mr. and Mrs. Gilbert noticed how well Calvin and Serenity got along with each other, the parents were filled with joy. Moreover, they could tell that Serenity had a good upbringing and an elegant temperament. The elders had a good impression of her.