R. Kelly and Whitney Houston may have their differences, but at the end of the day, it’s all love.

The Pied Piper of R&B and superstar diva worked together on Houston’s new album I Look to You. R. Kelly crafted two records, including the title track and “Salute.”

Houston spoke about her collaborator at a listening session in Beverly Hills last month, hinting that it was somewhat of a challenge working with The R. “Some people just have their own world and R. Kelly, he has his own world,” she joked. “I kinda stepped in and stepped out for a minute.”

At a listening for his album, Untitled, earlier this week in Chicago, R. Kelly turned the tables, revealing the advice he gave his friend to stage a successful comeback. “Go get clean and go get refreshed,” he told Houston. “If you sing [like you did on] ‘I Will Always Love You,’ you’ll be right back on top.”

Kellz said the two share a sibling-like relationship. “That’s like my sister,” he continued, lovingly referring to her as “Buckethead.” “We get into it all the time. Toni [Braxton] didn’t understand it either.”