Marriages built on fortune and fame aren't always conditioned to last, and if the growing number of divorced couples in Hollywood is any indication, it is getting harder and harder for couples to stay married in today's society.

Fortunately though, Christian country singer Carrie Underwood and her professional hockey player husband Mike Fisher don't seem to have that problem. Their relationship certainly changed when they welcomed their first son Isaiah Michael into the world this February. Underwood said their child only brought them closer together.

"Your marriage does change a lot when you have a baby. There's this whole other dynamic and you just have to make it a point to not lose you as a couple in that," she told PEOPLE. "Communication is key, checking in and making sure that your needs are being met is something that I feel that everybody could probably do more of."

Underwood said she looks up to her parents Carole and Stephen Underwood as good role models in marriage. Her parents have been happily married for 47 years already.

It also helps that both Underwood and Fisher have developed a high respect for one another, and they consider themselves as equal players in their marriage.

"I feel like Mike and I treat it like a partnership, which is a really good thing for both of us," she said. "I'm not the maid and I'm not the cook, you know what I mean? I do those things when I do them because I like to and I want to. You just figure out your roles and the things that each of you do better, and you give and take."

"Mike's been great, he's a hands-on dad for sure," she added. "He changes lots of diapers and gets [Isaiah] lots of bottles. The three of us are just in love so yeah, we're learning and growing."