Definitely Eternal Love or Three Lives, Three Worlds and Ten Miles of Peach Blossom, as it is called in China. I think his level of passion for his lady and his maturity is what sold me. He is so damn hot, too.
Love O2O-There is very little in the sense of conflict because the relationship is so mature and our male lead doesn't allow BS to interfere in his relationship. He knows what he wants and once he zeroed in, he was all in. There is nothing sexier than that. The script is, unfortunately, weak.
Mr Sunshine-Wow! I love historical dramas. The relationship between our MLs is beautiful to behold. It's like watching a flower bloom, Strong female characters are also a plus.
Legend of Fuyao-Here is a male lead who had no trouble poking fun at his love interest when she took herself too seriously. The more she rebuffed his advances, the more shamelessly he flirted with her. When she finally stopped fighting him, it grew into such a beautiful relationship.