Kamakshi, Live in your present, not in your past. Even if your past comes to you with open arms, it might just be a ghost! How do you believe someone who was out of contact when you needed and now came forward seeing an 'opportunity'? If you opt to revert to your ex, it might be a grave mistake and might ruin all three lives. So, move on with your life, forget your ex however hard it is, and never look back.