or is there currently no way to do that? i was liking them to keep track of them but… haha

I don't think we can currently track that. I've never seen an option for it

It's a bit of extra work for you, but you could create your own list, marked private if you prefer, and each time you heart someone, you add them to the list.

Yeah, I just do personal lists for my favourite actors/ shows (also that way you get to show them on your profile page, which is quite nice).