Whoa whoa, let's start slowly.
1) I'll consider it, but that part is more like a game over screen. The true bad ending happens if you fail Dalton's romance, and there is way more content after the dinner. Let me give you a tip: By the time you get to the infamous initiation test on SCS, if you have 80 on romance points, you'll get the good ending. Otherwise you'll get the bad ending.
2) After all the SCS thing, if your romance is over 80... you might get what you want. Remember, when I say good ending, I really mean it.
I can't be more specific here because spoilers but everything is listed on the JCS part of the help section, there you'll find how to get the good ending with Dalton.