James and his pro partner Lindsay Arnold spoke with ET's Lauren Zima backstage after the show, and James reflected on his relationship with Kirkconnell, gushing, "I'm in love!"
According to James, he got some solid guidance from fellow Bachelor alum Sean Lowe, who told him, "You're going to have a lot of opportunities over of the course [of your relationship] so make sure that you try and include whoever you end up with in that."
"Me and Rachael really took that to heart. So everything I do, she does," James explained. "She came to Summer Slam with me, we go to wrestling events together, we go to basketball, we do a lot of things together. It just helps with the relationship."
Kirkconnell was cheering for James on Monday, and has been supporting his DWTS dream throughout the past few weeks of training and rehearsals.
"She hasn't come to the rehearsals but we've made it a family affair," James said. "Rachael and I have hung out with Lindsay and Sage, Lindsay's daughter... So we spend a lot of time together."
Ahead of Monday's big show, Kirkconnell took to Instagram to show her love and support for James.
"My man is officially trading in his skateboards sneaks for some dancing shoes," she posted. "Can’t wait for you guys to see how hard this guy has been working and what they’ve come up with, you won’t want to miss it… I promise he’s come a long way."
"Love you the most @mattjames919, already so so proud of you," she added.