Jason Momoa is best known for his tough-guy roles, whether it be murderer Khal Drogo in 'Game of Thrones' or the hulking Arthur in 'Aquaman', but in real life he seems to be a real softie at heart.

The actor showed his sweet side recently when he visited his grandmother, Mabel, in Iowa and posed for heartwarming pictures with her that he posted on Instagram.

In one of the two cute pictures, the 39-year-old actor can be seen leaning towards his grandmother chair, while she is seen pulling his face close to hers. The other picture showed the affectionate duo watching a beautiful view through glass windows while they sat beside each other.

The loving hunk captioned the image with the words: "Needed to come home to Iowa and give my grams some aloha Love u forever grandma. #Mabel #thematriarch #raisedbywomen #loveuma #hawaiianiowan. HAWAII backwards is IIAWAH. IOWA Aloha j."

Momoa, who is married to Lisa Bonet, revealed recently how he was a full-fledged stalker of his wife when he was younger.

While speaking about his lifelong crush on his wife, Momoa shared some sweet intimate memories saying, "I am a full-fledged stalker. I didn't tell her that until we had two babies—otherwise, I'd be creepy and weird. I've always wanted to meet her. She was a queen, always."

Momoa was barely eight years old when he took the decision to commit himself to the woman whom he saw on TV. He said, "Ever since I was 8 years old and I saw her on TV, I was like, 'Mommy, I want that one! I'm like, 'I'm going to stalk you for the rest of my life and I'm going to get you.'"

Although the couple tied the knot legally just last year in October, the two got together when the then 26-year-old Momoa was working with 'Stargate: Atlantis'. The two met one night at an LA jazz club and immediately bonded over a Guinness which happens to be Momoa's favorite.

After the success of 'Aquaman', Momoa celebrated his victory at the box office with an Instagram post that was quite befitting for the situation. The actor referenced his TV debut on Baywatch along with a brief clip from the superhero movie and wrote in the caption: "BILLION DOLLAR UNDERDOG. From 'Baywatch' to making what once was the most disrespected superhero into a billion dollar movie. No one gets to the top without the people that love them."

He added, "My success is from my fans. All my aloha to everyone that had a hand in making this movie. Mahalo Zack for choosing me and mahalo James for creating this beautiful world. #grateful#lovemyfans #billiondollarunderdog#borntoclimb #outofholes #aquaman2#cheeeehuuuuuu #hhrajahh. Aloha j."