Rebekah didn’t like hiding things from Klaus per say, but her brother did have the overwhelming and amazing tendency of overreacting where she was concerned, so it was for that reason that she didn’t tell him that she had met up with his progeny Jack and ended up having sex with him. He would lose his mind and find some way to try and keep Rebekah under lock and key and find someway to go after Jack. That was her brother and his temper.
But the thing was, she couldn’t exactly avoid Klaus either. He’d think something was wrong if she did that, so it was for that reason that she went into her brothers art room to pay a visit to him. She stopped however, when she saw him painting with a brooding expression on his face. This could only mean a couple of things: 1. Nik knew about her and Jack or 2. Caroline.
“Nik?” She placed her hand on her brothers shoulder, giving it a loving squeeze. “I’ve seen that look before. What’s wrong?”