Great job with this one! It's interesting to see another take on the dating sim and shooter/bullet hell mix. I really like how you pulled it off - the 'backstory' is a wonderful idea, and the fact that you managed to keep the two games relatively separate meant that their eventual merging was even more special.
One change I would suggest is to give more of a downtime before the dialogue options, or at least some indication that a choice is about to appear. I accidentally selected the wrong option by firing too much... only once, admittedly! But still, I think it'd help to make the game a bit more forgiving.
... On a side note, the C.U.P.I.D. thing is a really strange and funny coincidence! Great minds think alike, eh? We tossed about a load of different ideas for the acronym, including 'Chaotic Utility Perfect for Inducing Death', 'Certified Undertaker Paid for Inflicting Doom.', 'Creator Undecided on Pseudonym Intended for Dare', 'Caravan Unintentionally Parked for Incorrect Duration', and 'Creator of Umbrellas that Perspire, leading to Inordinate Dampness'. I imagine he'd pick a different acronym every time, getting crazier and crazier throughout!
Anyway, sorry to ramble on and on... In the end, I think you all did a great job! It's such a fresh take on the theme, combining two genres in such a different (yet entirely obvious) way.