Is anyone else having a problem with the relationship hearts? I'm around night 100 and I have all upgrades, but every time i reset the hearts disappear
Under the upgrade section for the store, there are additional things you can buy to offset or negate the relationship reset entirely. The Rizzing Aura upgrade collection should help retain the progress you've made towards building up your relationship meter. I wouldn't advise you focus building up your relationship with them until after you've secured some of those upgrades.