I think this is supposed to feed into the fantasy of man relentlessly pursuing a woman and regretting having wasted his chance in the first place. But the man here is a red flag so red, it's a forest fire.
Firstly, he forced her to marry him 10 years ago when she was only 16. No mention of his age but seems to already be an adult. Then he proceeds to disregard her for those 10 years, to the point of forgetting he is married?
Secondly, he undressed her while she was unconcscious under the pretext of nursing her. And then telling her to kiss him as a reward for nursing her. Just a joke, he said. Well, if it's just a joke, why am I not laughing? After that, when she was asleep, he kissed her.
Thirdly, when she left him thinking he was dating another woman, he forced her to get back with him by threatening suicide. Stand on the roof and everything.
It's sick. Man has no redeeming quality.
But oftentimes what frustrates me with stories like this is how the woman lacks spine. This is the case, too. She is naive and ignorant to the point of stupidity. Also, easily swayed just because he was a bit... sweet? I don't know which part is sweet but that seemed to float her boat.
The pacing is sometimes too rushed, which makes the romance unconvincing and flat. And the addition of a second love interest who is no better than the ML is also contrived.