Available as both manhwa and novel.
Sweetheart
Also known as: Xintou Rou · My Babe · 心头肉 · First Love, Second Love, Who Do You Choose? · Unforgettable Love · Xīn Tóu Ròu · สองรัก หนึ่งหัวใจ · 大事な人 · 내겐 가장 소중한 너
Justin is loved by two men, and it's tearing him apart. His past is haunted by the complicated love-hate relationship with his first love - Alex, who also happens to be his adopted uncle and a powerful CEO. But in his current life, Mills, a seductive lieutenant has always been by his side. How will he make a choice?