The cute couple has been dating since 2015, but it's another love story Hough recently gushed to ET about.
"Julianne is killing life right now," Derek shared last month. "She is just killing it! Her wedding was literally the best week of my life. It was the most fun, exciting and perfect, perfection, beautiful, magical thing I've ever experienced.
"I'm not going to lie, I was like, 'I'm eloping in Vegas, because there's no competing against this wedding,'" he continued. "There's not! Unless I have her plan it, so we'll see."