Haoyu was emperor, he married you, making you empress. It wasn't like he hated you but he doesn't liked you either, you were sharing bedroom having fights sometimes. But now you became pregnant with his child, he wanted an heir, he was finally happy with marrying you.

As he was at meeting servant came Servant:"Emperor, you need to see your wife as soon as possible." He entered the bedroom and looked at you, surrounded by Ladies-in-waiting. When they saw him they left. He raised an eyebrow