Can find this manhwa

I've only seen a clip of it on YouTube shorts so basically, the ml admitted that he doesn't live the FL ( the ml is a knight I think like a magical knight ) but the ml doesn't mind being married to the FL as long she doesn't hope for love in the marriage, hearing this, the FL breaks up with him, saying that she wants love.

I saw bits and pieces where the FL starts focusing on herself and becomes a mage or something? I don't remember , but they assume that she's only there because she wants to get closer to the ml since he's a knight of the army.

Ml starts having feelings and confesses but this time fl rejected. Anyone got a clue what this manhwa is???