Jennifer Lopez on blending A-Rod's family and hers: Kids are so 'open to love'

Jennifer Lopez is opening up about how much her and boyfriend Alex Rodriguez's kids adore each other. In fact, the singer and actress says, the whole gang is one big happy — blended — family.

“Kids are so beautiful and open to love and new friends,” the star told People magazine in this week's cover story.

Alex Rodriguez Jennifer Lopez are thrilled their four children consider each other "bonus" siblings.

Andy Kropa / AP

Lopez, 49, who has 10-year-old twins, Emme and Max, from her marriage to Marc Anthony, and Rodriguez, who has daughters Natasha, 14, and Ella, 10, with ex-wife Cynthia Scurtis, took great care with the introductions — and were thrilled when everyone hit it off.

“I was so loving to his kids and he was so loving and accepting of mine, and they embraced each other right away, Lopez revealed. "(It was) ‘I get a new bonus brother and sisters to hang out with all the time and it’s nice’.”

Rodriguez, 43, believes the harmony has helped strengthen the couple's bond. "Our kids have become best friends and that keeps us both grounded and appreciative," he told the magazine.

Jennifer Lopez's kids surprise her on stage in final Las Vegas show

In October, the former New York Yankee slugger demonstrated how tight-knit he is with Lopez's kids when all three surprised the singer onstage during the last night of her Las Vegas residency. Lopez burst into joyful tears at the sweet sight of the trio.

Read books together every day. Get started when he's a newborn; babies love listening to the sound of their parents' voices. Cuddling up with your child and a book is a great bonding experience that will set him up for a lifetime of reading.

Just last month, in honor of Thanksgiving, Rodriguez shared a sweet photo of the family all together. "Thankful for mornings like this with the ones I love most," he wrote on Instagram. "I am truly blessed."

The couple's romance has been going on for two years now, and to hear Lopez tell it, things just keep getting better and better.

"We love each other and we love our life together,” she told People. “The exciting part of our love is that we’re both very aware of how lucky we are to have found each other.”

Jennifer Lopez and A-Rod take their kids to a Lakers game