The 30-year-old rapper admitted he's 'really happy' right now, and that he and Millie, 25, are starting to think about children.
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He told Loaded: "Soon we're going to start our family. Well, not quite yet, but it won't be too far off hopefully."
Pro Green and the former Made In Chelsea star recently celebrated their first wedding anniversary, and he admitted the big day made brought up difficult memories.
He said: "I didn't have either parent there and it's the one day you want them.
"Getting married forced me to face up to a lot of s**t I'd been shutting away. When I got married, that brought it all back about my dad."
His father Peter Manderson took his own life in 2008, and Pro used this experience for his new music.
"I had to take a look at myself otherwise I may have ended up hanging from a rope.
"I know what it's like when I get down and I know how permanent it feels – like it's never going to go away."
Millie also spoke recently of life with Pro. She said earlier this year: "All I want to do this summer is be in my house. I plan to just enjoy having our house ready and chilling the garden."