United Kingdom, Feb. 14 -- Vanessa Lachey always reminds her husband Nick Lachey of their age gap.

The 44-year-old model has been married to former 98 Degrees star Nick, 51, since 2011 and joked that she brings up their seven-year age gap "all the time, to his dismay.

She told E! News: "I tell him all the time, 'When I was 12, you were 19' He's like, 'Don't say that."

However, Nick - who has Camden, Brooklyn, 10 and eight-year-old Pheonix with Vanessa but was initially married to Jessica Simpson, 44, in the early 2000s - noted that at their stage in life, seven years does not feel as long as it perhaps would have done in the past.

He said: "That's when it just sounds creepy! Seven years feels like seven months. When you get to be this...