The former Lizzie McGuire star announced in January that she and hockey player Mike had decided to split following three years of marriage.
Since then, however, the couple – who have a son together – have continued to spend time together and stay amicable.
"I'm separated from my husband right now, which has been a very difficult thing to go through, but we have a lot of love for each other and we have this beautiful baby," she told Billboard.
Their son, Luca Cruz, was born in 2012.
Despite being separated for now, the star did suggest their marriage wasn't entirely done and dusted.
Talking about a song on the new album, she said it's about "my love for this person, that maybe we're not meant to be together, maybe we are. It's very, very personal."
Hilary is about to release her first album in seven years.
Her comeback single is called 'Chasing The Sun' and it's going to be premiered on 29 July. She's just signed to RCA Records as well, which will release her album later this year.
"I took a break from music for quite awhile, but it gave me the power to choose my next steps carefully and I'm really proud of the album I've made. 'Chasing The Sun' is a light and fun summer song that I hope helps people to feel a little more carefree."
"I couldn't be more excited to join the RCA family! I love my team there and feel so lucky to be in the company of their talented artists. I came to them with my vision for the album and it has been a real labour of love, but something I am so proud of," she said. "'Chasing The Sun' is just a peek into my new album. I've worked very hard and the album is a great representation of the experiences I've had in my life and where I want to go from here!"
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Star splits of 2014 in pictures:
Copyright: WENN Apega