After that last pannel i feel like a proper continuation would be for him to stay single, if he gonna go out with F-chan then its rather stupid.
Ppl forgetting that both of the girls were giving Yandere vibes. Will the blonde just lose because of the childhood friend curse? I hope that even i he goes out with F-chan now he gonna end up with blonde in the end. She kinda made a lot for him and was always there when he had a hard time, also working and living alone just to be close to him.