In astrology, we often blame the planets when people suddenly change their behavior towards us. "My Rahu Dasha started, so my friends abandoned me." "My Saturn return began, so my partner changed."
But here is the deep spiritual truth: The planets do not change people; they reveal them.
When a difficult planetary period (like Sade Sati or Rahu Mahadasha) begins, the universe removes the illusion (Maaya) from your eyes. The people who "suddenly changed" were always like that; you were just too blinded by your own good planetary periods to see their true nature.
Do not mourn the loss of fake relationships. Thank the planets for waking you up from the dream.