I've connected one after another and it's still 4 happy faces. I've connected ALOT for about 2 days. I wanna get 4 hearts b4 they're adults. I'm trying to get them to have a baby when they're oldies. and I'm not supposed to connect them at all when they're adults or they will give birth 2 soon.
how long will it take for them to have 4 hearts instead of 4 happy faces? and if I need to do something, wat do I gotta do?