Collin Gosselin is revealing the heartbreaking truth about his family. The 21-year-old reality TV alum has started up an account on TikTok, as we've been covering in recent weeks. He's not the only member of his family on the social network, either - his mom Kate Gosselin is also growing her own social media presence over there, too. But it's Collin who is dropping the saddest content, without a doubt. And this week, that happened yet again.