The phrase "always be your secondary star" likely refers to someone who acknowledges they are not the central focus or priority in someone's life but is content to remain a supporting figure, offering consistent presence, care, or support.
The "secondary star" could symbolize someone who plays an important but not primary role—like a best friend, a supportive sibling, or a partner who doesn't overshadow but always stands by. It conveys humility, loyalty, and a willingness to be there in a meaningful way without seeking the spotlight.
Context would shape its exact meaning, but the sentiment is typically one of quiet devotion.