Please recommend a romance novel with elements of reconciliation.

The female protagonist confessed to the male protagonist with a microphone in a KTV after being drunk. Later, the male protagonist proposed to the female protagonist with the ring of the can as a ring. The male protagonist's ex-girlfriend came to the male protagonist after the marriage of the male protagonist and stayed in the male protagonist's house. The female protagonist fell down the stairs and had a miscarriage (the male protagonist only treated the female protagonist as a sister at first. When he married the female protagonist, he only said "I need you" instead of "I love you". I probably only remember this. The female lead had a miscarriage and then filed for a divorce with the male lead. It seems that the two of them reconciled in the end. Anyone who knows the title of the book, please help! Thanks!