The last item grant for candy hearts comes at 50. We don't have plans to add any others.
Click the pink "Gaia Online" logo to be taken to a mockup of the original Go-Gaia.com. Click the three small banners three times each for grants of 100 gold. Also scroll down to the very bottom right and click on the hamster to receive a 10th Anniversary Moobie Plush.
Object of Affection = Collect all 34 hearts (This mean from the different types of valentines you can send. To see what you need just hover your cursor over the [?] area next to hearts received, and remember lag/delay is normal)