"It's Not Enough" by Starship is a song about a person who wants more than just words from their partner. They are tired of empty promises and want to be shown love and affection. The lyrics express frustration and disappointment with their partner's lack of effort in the relationship. The singer makes it clear that simply telling them that they love them is not enough and they need actions to back up their words. The song's message is that love requires effort and commitment, and without both, it's not enough.