Thank you!
You can actually avoid the bad ending on the dual love path. With the right choices and enough affection, Cassie will stay in the house and the story will go on.
Kelly's love path has barely begun but things might speed up a bit in future updates.
The next update will only be about quality of life stuff (including a walkthrough mode) and a rework of Day One. But I'll get back to new content right after that.