The answer is no, Selena Gomez did not unfollow Kylie Jenner. This information can be confirmed by checking their respective Instagram accounts.
While there have been rumors and speculations about a potential falling out between the two celebrities, there is no concrete evidence to suggest that they have unfollowed each other.
It's important to note that social media interactions can be complex and subject to interpretation. It's always best to rely on credible sources and official statements from the individuals involved when seeking information about their personal relationships.