The couple has been dating since 2001 and has three kids together.
Wahlberg started talking about marriage earlier this year but refused to name the date. He said, "I finally feel like we’re ready to take the step and we’ll have success."
Now, In Touch magazine reports that Wahlberg and Durham will exchange vows at the Good Shephard Catholic Church in Beverly Hills tomorrow.
A source tells the magazine, "It’s going to be a small and intimate event, with just close family, including their kids."
Wahlberg previously told People.com he was toying with the idea of getting married in his native Boston, but feared, "If we do it in Boston, I would say there'd be a lot more family members, so there'll be some fighting."
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