1. I knew he was lying all along, but I didn't want to confront him about it.
2. The answer was right in front of us all along, we just didn't see it.
3. She had been planning this surprise party for me all along, and I had no idea.
4. I thought I was lost, but it turns out I was on the right path all along.
5. The truth had been staring me in the face all along, but I refused to accept it.
6. He had been cheating on her all along, and she finally found out the truth.
7. I had suspected her of stealing from me all along, and I was proven right when I caught her in the act.
8. We had been following the wrong trail all along, and that's why we couldn't find the treasure.
9. The culprit had been hiding in plain sight all along, but no one suspected him.
10. I had been doubting myself all along, but with the support of my friends, I finally found the courage to pursue my dreams.