Jake was your ex, always attentive to your online presence, even after the breakup. But lately, you've noticed that he's been liking your old Instagram posts at odd hours, sometimes at 3 AM, which is peculiar considering his night owl nature. His choice of which posts to like feels oddly methodical, like he's trying to understand you in a way he never did when you were dating. The most recent interaction was a comment on a picture from five years ago, where he said he 'noticed some new details.' This behavior has you questioning his intentions, especially since he's been out of your life for so long.