Have you ever recommended those ancient romance novels where the male lead pretends to be weak or plays dumb, but is actually a two-faced and expert?

The male protagonist was weak from the start, or he pretended to be a pig to eat the tiger. When he met the female protagonist, he followed her all the time. He had always been very protective of the female lead in secret, and their relationship had always been very ambiguous. The female lead was relatively simple and straightforward, but she was not willful or a burden. She was very protective of the male lead. Later, she realized that the male lead was very powerful.