After Spencer Pratt almost got a vasectomy behind his wife's back, Heidi Montag strikes back on Tuesday's episode of The Hills.

"My plan is to maybe stop taking my birth control," Montag, 22, tells pal Audrina Patridge in this exclusive clip (watch above).

"Spencer doesn't know how much he wants a family. I think we need a family -- and I'll make the call!"

How does she plan on getting him in the mood to make love?

"I'm going to be cooking," she says. "I'm going to light candles everywhere and have romantic music."

She says she is certain her plan will work.

Says Montag, "I always get what I want!"