As the CBS mega-hit Hawaii Five-0 builds toward its epic finale, we thought it only fitting to bid an extra-fond aloha to two of the show's biggest fan faves. Alex O' Loughlin and Scott Caan—aka ex-Navy SEAL Steve McGarrett and his wisecracking sidekick Danny "Danno" Williams—share a chemistry that's powered the scenic and sun-soaked police procedural from the start, and to thank them for 10 seasons of spills, chills, and more than a few shirtless thrills, we're spilling a few of our own reasons for secretly crushing on these bad-ass boys of summer.

Don't miss the Hawaii Five-0 series finale on Friday, April 3 at 9/8c on CBS and CBS All Access.

Alex O’ Loughlin Makes Good Choices

Having starred on two previous dramas—Moonlight and Three Rivers—that didn't last past a season, O'Loughlin told Watch in 2017 that he was uncertain about taking a role in Hawaii Five-0. "I didn't know anything about Hawaii. I asked everyone, 'What do I do? Is this the right move?'" But move he did—at the urging of friends and colleagues—and the rest is TV history.

Alex O’ Loughlin Has A Sense Of Place

"People say these islands either embrace you or push you away," O'Loughlin told Watch in 2017. "I found myself, as a gift from the islands, being blessed in and given a Hawaiian name. I found all sorts of things drawing me in deeper and deeper."

Scott Caan Is Endearingly Humble

"I'm just trying to have fun," Caan told Watch in 2011 when we brought up his Golden Globe nomination for best supporting actor. "It's a nice thing when people say nice things about you. ... I didn't realize I was insecure until I turned 30. I always thought I was the [bomb], and then I turned 30 and I'm like, 'Wait a minute, I've got all kinds of fears and insecurities.' So, it's a nice thing."

Scott Caan Learns From His Past

"I've done so many stupid things in my life that at this point, if I don't have to risk getting hurt, I won't," Caan told Watch in 2011, on the subject of doing his own stunts. "I've fallen off horses, motorcycles, cliffs, skateboards, surfboards, busted my head open, and gotten stitches and surgeries all over my body. They don't pay me enough to hurt myself on this show."

Alex O’Loughlin Takes It For The Team

Though O'Loughlin elected to do most of his own stunts throughout Hawaii Five-0's early seasons, he soon learned this was a mistake. "I blew one of my knees, I've torn ligaments and tendons, ankles, both shoulders, both wrists," he told Watch in 2017. "My current favorite injury," he said at the time, "is two herniated discs in my lower lumbar, which I'm receiving stem cell treatment for to avoid surgery."

Alex O’ Loughlin Keeps His Cool

"I've had the great fortune of being exposed to a lot of Navy SEALs, who've helped me with the character," O'Loughlin told Watch in 2017. "They're terrific guys," he said. "But being like them requires a specific sort of energy, and I have to manufacture that energy. At the end of the day it's like, 'Keep calm and have another cold one.' "

Scott Caan Brings The Chemistry

In his 2011 interview with Watch, Alex O'Loughlin recalled his first meeting with his new co-star, and told us that despite Caan's apparent distractedness, their chemistry was instant. "... He'd just landed, and we got in the van and drove to the table read. He was texting his new girlfriend at the time, and I was like, 'Really?'," O'Loughlin said, chuckling. "But I realized in that moment that, OK, this is cool. We just riffed. The bromance began."

Alex O’Loughlin Is A Family Guy

When he was a few years into filming Hawaii Five-0, friends from his native Australia helped O'Loughlin rebuild a midcentury home with "spectacular bones" that he discovered in Diamond Head. He later married the Hawaiian surfer and model Malia Jones with whom he had a son, Lion, and completed the family picture with his teenage son Saxon, and Jones' son Spike from a previous marriage.

Alex O’Loughlin Believes In Something Bigger

"I'm about to use the G word to embrace the scope," O'Loughlin told Watch in 2017. "I don't know what's out there. I don't know whether there's a God or whether there's lots of gods or whether there's just universal energy, but I know from what's happened that there's something bigger than me."

Don't miss the Hawaii Five-0 series finale on Friday, April 3 at 9/8c on CBS and CBS All Access.