Julianne Hough & Brooks Laich can't keep their hands off each other at friend's birthday party -- see pics!

Things are really heating up on the blue team.

Julianne Hough and husband Brooks Laich were spotted sporting major PDA at a friend's weekend birthday retreat in Big Bear Lake, California -- the "A" in this case standing both for affection and athleticism.

MORE: Julianne Hough Shares Flashback Booty Pic From Her Tropical Honeymoon

Hough and Laich were both on the blue team for the various outdoor activities, which at multiple points found the Dancing With the Stars pro and NHL player getting into each others arms, and up close and personal. An eyewitness tells ET that some of the activities including boulder jumping, swimming, an egg relay race, and a good old fashioned water balloon fight.

Why can't this be all birthday parties??

EXCLUSIVE: Julianne Hough Says It Was Love at 'First Sight' With Brooks Laich, Shares Her Wedding Must-Haves

Meanwhile, it's good to see the newlyweds are still fully enjoying their honeymoon phase after getting married on July 8.

See photos of Julianne and Brooks' honeymoon:

Julianne Hough and Brooks Laich's honeymoon pics
See Gallery
Julianne Hough and Brooks Laich's honeymoon pics
Birthday Girl in my Birthday Suit! 👙 #honeymoon #followmebabe
Hats off to my beautiful wife @juleshough - wishing you the happiest of birthdays today! You are full of so much goodness and love, your joy is contagious, and I am so grateful that it's me you choose to spend your life with! You are the best part of every single day, happy birthday babe, ❤️B! #honeymoonbirthday
Yay it's Friday!!! Can't wait for this weekend!! But first, #fbf to the Seychelles a few weeks ago on our honeymoon. Take me be back to La Digue! ⛰🏝🌍
#tbt to one of my best arm and core workouts ever! 🐠 Sometimes you just gotta go out and catch your own dinner... Best sashimi of my life.... #yellowfintuna #bonito #sailfishgotaway #sailawaysailawaysailaway #enya
And so it begins... 🏝 #honeymoon
Brunchin' with my huzzzbin' 😍 #honeymoon
That view though......we might never leave 🏝 #honeymoon
I see you Mrs Laich! #honeymoon
Yeah, this is going to be fun.....#honeymoon 📸: @juleshough
Everything's better with you! 🙌🏼 #honeymoon
My wife and I - circa 1957 👌🏼
#sidepony #nomakeup #lovinglife 🤙🏼 #honeymoon
🕊🕊 #honeymoon
Fitness should never be a chore, if it is you are doing it wrong. Working out should be fun and something that invigorates and inspires you to become your best self! It should be something you look forward to as a part of your day......even on your honeymoon! 🏋🏝 #barbellJules
First of all, I can't thank you all enough for the incredible love you have given my husband @brookslaich and I. We definitely feel it all the way out here in the Indian Ocean! Second, to be able to celebrate my birthday in the honeymoon bubble of love has been incredible, and you all are the most thoughtful people in the world to come up with posts and collages that I know take time. You will never know how much it means to me. Thank you from the bottom of my heart! ❤️🍾🥂 Love Jules xoxo
It wouldn't be my birthday without my bff and #wife surprising me with cake, champagne, flowers and the sweetest note! You are 100% the most sneaky and thoughtful person I know! 👸🏻 Love you Kristy Kat! #ptk #loveyoumorethaneveryoneelse
#honeymoon 👰🤵

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