Step 1 get on her good side
Step 2 admit they like each other
Step 3 find out she was doing it for the money
Step 4 one feeling betrayed one feeling guilty
Step 5 find out it was about the sister begrudgingly understands the reasoning
Step 6 resolution
Step 7 sister gets better
Step 8 happily ever after / we get enough foreshadowing for a second arc
Welp there’s my guess for how things are going to turn out.