The couple that works out together, stays together! That's the motto that seems to be true for celebrity power couple Alex Rodriguez and Jennifer Lopez. They've been dating for about five months already and it seems like the key to making their relationship work is making time for each other and getting their workouts in.

View this post on Instagram

Just another Sunday night 💚🍏

A post shared by Jennifer Lopez (@jlo) on

MORE: The Internet Thinks These Celebrities Are Related — but Like, No

Alex, 42, held a press event for the grand opening of his new UFC Gym in Kendall, FL and he gushed over how important fitness is to both him and Jen. “We work out together all the time — she is a fitness enthusiast. She’s a much better athlete than me — she’s a former track star from junior high,” he told E! News with a smile.

A-Rod said that her preferred gym of choice is TruFusion, the brand of gyms that he is now a partner in. He said that J.Lo will definitely make her way to the new gym soon and she prefers to switch up her workout routine by participating in all types of classes that the gym offers which include yoga, spin, Zumba, as well as training mixed martial arts.

MORE: If You Want a Flat Stomach Like a Celebrity, Simply Stop Eating Bread and Start Eating Baby Food — Wait, What?

And it looks like her hard work in the gym is definitely paying off! The "Ain't Your Mama" singer loves showing off her sexy curves and insanely toned abs — and she did exactly that while wearing a sheer black mini dress at her joint birthday party with Alex last month. Since J.Lo's bday is on July 24 and A-Rod's is on July 27, they decided to celebrate together — and he couldn't help but gush over her on her special day.

"Wishing a happy birthday to this amazing human being who lights up my world every day," he wrote and added, "Te amo muneca" — which translates to "I love you doll" in Spanish.

Scroll through the gallery below to see more cute photos of J.Lo and A-Rod!