I can't get past 3 hearts??

So right now I'm married to Logan and like ofc I'm trying to have a baby, which I've been told you need to be at max hearts to do. I've been taking him on dates, gifting him the best gifts, the works. Finally I filled up 3 hearts. I gave him another gift, one worth 20 points, but it didn't budge. I did the same thing again, nothing. Is my game bugged?

For context I've finished the game, this is happening post credits.

(Also here's one of my favorite Cooper lines, just to add something to the post :P)