Agree with DarkAeonX this seems to be a bug, I'm pretty sure points are not assigned correctly.
I was often seeing the heart beat but my score with the girl in question did not improve. I thought maybe there were fractional points or something I wasnt seeing until later. I thought I was doing well with Dalia but was still only at 1 heart by the Roman Roleplay, apparently you need 4! Surely I wasn't that bad with her 😅
I have to assume I will eventually lock myself out of all paths because of this so will stop playing for now, 🤞🏻you can find the issue, I really want to know what happens.
I'm playing v0. 5 and am on android.
One other bug on android is if I switch out of the app there seems to be about a 10% chance of coming back to a black screen. I figured this is maybe cos I'm playing on a Fold and constantly switching screens, or because it's in my secure folder, and was most likely due to the underlying engine so not likely a lot you can do and maybe not many people affected so hardly worth it but thought I'd mention it.