If you mean completely branching narratives then I agree but it's totally possible you use alternate dialogues to create the impression of branches where none exist. Take, for example
Holy Bacchus's idea that MC and Derek will be foreced to play-off against each other. If MC stayed with Sage or Bella (both temporary solutions to his homelessness) then he'd compete hard to win the challenge whereas, if he stayed with Derek, he'd figure he could take over Derek's bed and throw the competion. In both cases, Derek would win. MC would continue staying with one of the girls for a while of move into Derek's room.
Most of that wouldn't need much work, the locations are already rendered, as long as the majority of events in those locations are limited to the free-roam sections it doesn't matter where they take place.