The daughter of screen legend Clint Eastwood, Alison Eastwood, is getting married to her long-time boyfriend Stacy Poitras, the couple has revealed to Celebuzz.

The stars on CMT’s Chainsaw Gang have been together for five years and have finally decided to say “I do” after being secretly engaged for the past three years.

“I feel like I am the luckiest guy in the world because Alison is truly an angel, we are both very happy,” groom-to-be Poitras told Celebuzz, in an exclusive interview.

He even asked the four-time Oscar winner’s permission to wed his daughter, who was born to Eastwood’s ex, swimsuit model Maggie Johnson in 1972.

“Clint is a cool guy… but he’s definitely a man of few words,” Poitras added.

“I actually asked for his permission three years ago at a Thanksgiving dinner in Pebble Beach that was attended by Alison’s mom Maggie too,” said Poitras.

“After the meal, I quietly asked him when we were alone if it would be alright if I asked for his daughter’s hand in marriage.

“He cooly looked me in the eye and softly said, ‘You better take that up with her,’ to which I replied, ‘So, I have your permission?’ and he said ‘Yes.’”

Alison, 40, starred opposite her dad in the 1984 film Tightrope. She made her directorial debut in 2007 with Rails & Ties, starring Kevin Bacon.

Despite her ties to Hollywood, Alison has kept her relationship with Poitras intensely private and out-of-the Tinseltown glare — so much so, that her future husband wants the intimate details about their proposal to remain a secret.

He added, “I am a very private person, so I don’t want to reveal how I actually proposed to Alison — but I was delighted when she said ‘Yes.’”

And, the ring?

“I gave her ring with a green emerald stone with two diamonds,” Poitras revealed.

Though the couple has yet to reveal a wedding date, Poitras said it will be an outdoor occasion in keeping with the couple’s love of nature.

The pair’s three dogs, two cats, two rabbits and three horses will also have a special place at the ceremony — and Clint, 82, has agreed to walk his daughter down the aisle.

“I actually spoke to Clint a couple of weeks ago over Thanksgiving and he was very happy for us both. And, naturally, he will be at our wedding to give his daughter away,” Poitras said.

“I am not really a very religious person, but we intend to have a traditional bare bones style wedding full of family and friends which will be a real celebration.

“Both Alison and I already refer to each other as husband and wife, because we feel we have such a strong spiritual bond between us and we want to celebrate that at our wedding.”

The couple first met five years ago at The Grill bar in Agoura Hills, Calif. where Poitras previously had an art studio. The two star on the CMT reality series, Chainsaw Gang, which airs Saturdays at 10 PM.