Gerard Butler pretends to not know Brandi Glanville despite 'Real Housewives …

Glanville reveals. "For two years he's like, 'Will you marry me?' All right, finally, [while in Vegas] he was like, 'Will you marry me? Let's just do it! I was like, "All right.'" So, they hot-footed it over to one of Sin City's many wedding chapels,

Famously scorned woman and "Real Housewives" star Brandi Glanville played "Plead The Fifth" on "Watch What Happens Live" (Weeknights., 11 p.m. EST on Bravo) Monday night.

Confirming Us Weekly's reporting, she gives the hunk an "11" on a scale of one to ten.

Glanville reveals. "For two years he's like, 'Will you marry me?' All right, finally, [while in Vegas] he was like, 'Will you marry me? Let's just do it! I was like, "All right.'" So, they hot-footed it over to one of Sin City's many wedding chapels,

If Gerard Butler really did have mind-blowing sex with "Real Housewives of Beverly Hills" star Brandi Glanville — as she proudly claims — he doesn't…