You do miss the scene where MC plays the guitar for Jill and Bella if you are not living at Bella's place. For completionism sake, on my 'pure' Jill runs I go see Bella at the library so I can go at her place at the end of ep3, but then stop going after her, don't go in the sauna, don't push it in the pool and you will eventually stop also being on Bella's path. You will know it when she asks you on the phone to help you clean your room at the DIK's place and I think(?) the MC says there is no need for her to come. This way you also avoid breaking her heart in EP8 since she lets go before she catches feelings. If everything fails, just go the Cathy route and that will end Bella's route as well.