Tropic Thunder's Jay Baruchel Is Engaged!

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Jay Baruchel had a few reservations before asking Canadian actress Alison Pill to be his wife.

"I was going to give her a ring and I wasn't sure," the Tropic Thunder actor tells ET Canada. "I wasn't ready in my heart to say what it was."

Once he mustered up some courage, the She's Out of My League star, 28, presented Pill, 25, with a 180-year-old wedding band.

"When I gave it to her, I just said, basically, 'S*** or get off the pot,'" he says. "I said, 'F*** it. Will you marry me?'"

The couple plan to tie the knot in September 2012.