I recently did a Debbie only run and I found it to be very disappointing.
It's a shame that the route is so bad, because Debbie was an early favourite of mine and I was hoping that her route could be the main one I played now that Katie has been heavily flanderized. Jenna's route was very tempting up until her creepy voyeurism got out of hand, so I'm slowly running out of options here. At this rate, my final choice for true love will be a big bag of money.
I disagree...
it is MC who forces his hand, Debbie goes to him to ask for his help in coming forward with Lily, her eternal love, while at the same time declaring her sexuality, and she does it with Mc before everyone else.
It doesn't seem like the perfect time to declare himself... but Mc does it anyway, and it's not like he didn't know about Lily...
and in spite of the situation Debbie doesn't reject him, but she needs to get Lily out of her head, who has been her focus for a long time.
MC is looking for a complicated situation, he can't expect Debbie to be nicer than she is.
Of course at that point he goes to the opposite extreme, when even though MC initially says he doesn't want to help her, he ends up being ready to help her both in the evening at the beach house, but even goes so far as to offer to pay the girls for a spa stay in order to give them another chance... I would say that was a little too selfless...
From then on Debbie never pretends not to know how MC feels and always takes it into account, but at the same time she wants to understand if Lily is the right woman...
and at that point MC forces his hand again, understandably, but that's it, pulling down the curtain at the party (when Debbie has already told him that by kissing Lily she was actually thinking of him and that she basically chose him) declaring himself to Debbie in front of everyone.