Ryan Seacrest may not be single for long!

The sexy American Idol host stopped by Chelsea Lately to discuss everything from his diet to possibly walking down the aisle with girlfriend of three years Julianne Hough.

Seacrest, who says Hough is "the best part of every day," told host Chelsea Handler, "She's so beautiful...stunning. She is phenomenal."

When Handler asked when Ryan is tying the knot, the 38-year-old KIIS-FM host said, "She'll be the first one to know. Well, when are you getting married?"

Chelsea's response ..."I'm not going to get married, Ryan. I'm not interested in that. I don't have to prove to people that I'm straight."

Hilarious!

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On Friday it was a trip to the beach, and on Saturday Ryan Seacrest and Julianne Hough enjoyed some drinks and then hopped aboard a 177-foot yacht!

Ryan is renting the Fortunate Sun for a whopping $300,000 a week, so he's definitely going all out for his lady love on their island getaway! Of course, it's not just about spoiling the Dancing With The Stars hottie rotten -- he certainly has other ways of letting her know how much she means to him!

"I got a sweet, sweet text from him today while I was doing a photo shoot just [about] how proud he was of me," Julianne Hough said in an interview late last year with Wonderwall when asked about her beau. "I'm like, 'Really -- why?' I mean, 'Thank you! But why?' He's like, 'You know, you're just killing it ... I read it out to my friends and got emotional."

"We work hard, and it's why we're attracted to each other," she added. "We both are attracted to drive, ambition and success -- depending on what you think success is." Awww!

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Well, one them did, anyway!

Julianne Hough pranced around on the beach in St. Barth in a sexy white bikini, and all we have to say is ... beau Ryan Seacrest sure is one lucky dude!

After spending New Year's Eve in New York City, the cute couple jetted off for some fun in the sun, and we're sure the Dancing With The Stars hottie is having a blast with her beau, but you have to wonder if she getting antsy about getting engaged! They've been together for over two years now, which is longer than most Hollywood marriages, so we're getting impatient for her...

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After ringing in the new year in New York, Ryan Seacrest and girlfriend Julianne Hough went on a brief vacation in beautiful St. Barth.

While taking a break from hitting the beach, the sexy twosome worked out their svelte bodies on a hike through the beautiful trails.

We're loving their stylish hats. Even though the weather is nice and warm, seems as though the KIIS-FM radio host is a bit cold. Time to pick up the pace, Ryan!

Birthday boy Ryan Seacrest turned 38 on Christmas Eve and celebrated his big day with girlfriend Julianne Hough and family at Cecconi's in West Hollywood.

Although it was the American Idol host's celebration, we have a feeling his ladylove was hoping it would be the perfect time for her mega-rich beau to pop the question.

Perhaps these two will end this year as an engaged couple. Come on, Ryan ... no better way to ring in the new year than with some engagement bling!

A couple that skates together, stays together!

Julianne Hough and boyfriend Ryan Seacrest added a new activity to their repertoire as the two went ice skating in Beverly Hills.

The couple, who were joined by a big group of friends, looked full of glee in the photo the former Dancing With The Stars performer tweeted on Friday with the caption, "Ice skating fun last night."

Glad to see that all is well with these two despite their crazy schedules!

Julianne Hough is one lucky lady! The sexy Footloose actress and her multi-millionaire beau Ryan Seacrest prepared to leave Paris after a quick weekend getaway.

The twosome, who were headed back to LA, cruised through the Charles De Gaulle airport looking so in love.

A source close to the couple tells X17online exclusively:

"All signs point to Ryan popping the question but he didn't do it during this trip. He's really serious about Julianne but they're both so busy and just taking their time enjoying their relationship as it is now. Still, all their friends think an engagement is coming soon."

Too bad Ms. Hough didn't leave the City of Lights with a ring on it. Come on, Ryan ... you KNOW she can't wait to be Mrs. Seacrest!

This season of American Idol is sure to be jam-packed with drama ... especially with Nicki Minaj and Mariah Carey sitting at the same judges' table.

After word spread that the two divas got into a screaming match during auditions in Charlotte, NC, host Ryan Seacrest opened up about the situation on KIIS-FM.

Seacrest told his audience: "It got heated between Nicki and Mariah. It was intense! I'll be honest with you . .. It went far last night. It did get intense."

During the AI fight, Minaj is heard saying, "I told them I'm not f**kin' putting up with her f**king highness over there. Figure it the f**k out. Figure it out."

Ryan then adds:

"These are all very different individuals with different perspectives and different opinions that provide for interesting conversation and dialogue and feedback for the contestants."

With AI competing against X Factor with Britney Spears and Demi Lovato AND The Voice with Christina Aguilera and Adam Levine ... makes us wonder if this diva drama was all staged to get people chattin' about Idol. Guess it worked!

Click thru to see the video of Nicki cussing out Mariah.