Seems like this is going to be "RE:Life" meets "A Christmas Carol" or "It's A Wonderful Life".
Seems like it is going to try and show the two that maybe their lives won't be better by never getting married.
The girl in this chapter was pissing me off the way she was so impatient to have sex, but I guess I understand her motivation now. She can never go back to her life, and having sex allows her to forget what she lost.