In refresh I keep getting my mon's affection up to 5 hearts and it goes back down to one, how is this possible?

I’ve looked everywhere to find information on this subject online but it’s mostly all about traded mon’s and amie. I have a Pokémon, actually it’s happened with more than one, that I have caught in-game; I’ve gotten up to 5 hearts in refresh- suddenly there doing all those cool things they do, getting rid of status conditions, dodging - all that good stuff. But I check back a few days later after not feeding or playing with them or opening up refresh at all, and sure enough it’s back to one heart. I’m not sure if the bonus’s or the extra exp actually stayed- that’s reallly all I care about, but the hearts keep going down. I thought once you had them full, they were there to stay. Does anyone know why this is happening or if they do still keep the benefits once they have gotten to 5. Thanks!

Pleaselog inorregisterto add a comment.

More hearts go down the more amount of time you haven’t played, fed , took care of you Pokemon. This is real life logic for example, If your friends has a lot of time but doesn’t want to stay or is trying to avoid you, you can tell that they don’t want to be your friend anymore. Affectionate(Refresh) is also different from happiness which affects the moves return and frustration, happiness is when you walk with you Pokemon and battle with it without letting it faint, don’t use life orbs or they’ll decrease your Pokemon’s happiness(Not hearts thing) Giving your Pokemon the berries they like will make them more happier. I know that this may not be the exact answer you may be looking for, but I hope I helped.