When ET spoke to the pair in May 2019, they gushed over each other.
"I tell him every day, and I thank the Lord every day, because he literally is the most amazing man that I've ever met," Sierra said of Joe. "His heart is just incredible. I don't know how he deals with me and is so patient and kind. I'm so lucky."
"I couldn't say anything else but great things about her, too," Joe added of Sierra. "... We complement each other in a lot of good ways, and she's the yang, I'm the yin, so it's a very good balance, so we're a great team. There's no one else I want on my team."