Life With Demons Volume 1 Book 1

In this fanfic for both Hazbin Hotel and Your Boyfriend with a few OCs, it is Valentine's Day at their high school and Peter is taking Evangeline out on a date. Only Evangeline's rude personality makes it nearly impossible for him to do anything with her and Alastor only makes things worse by trying to split them up. Alastor has been Evangeline's best friend for three years and wants nothing more than for Peter to be out of the picture.
Things get saucy when Sir Pentious meets up with Peter during Study Hall with a valentine for him. Evangeline is quick to become suspicious of it but Sir Pentious is also quite clumsily able to cover his tracks.
Evangeline goes along having the best day she possibly can until her Sex Ed teacher/Volleyball coach, Valentino, benches her for no reason right before they face off against their biggest rivals, Heaven High. Now Evangeline has to figure out how to get off the bench or their team is sure to lose.
Peter's anger builds up through the story because he has had enough of Evangeline's disrespect and lack of gratitude and eventually blows up on her, making it clear that things better change even if it means he has to resort to violence.