不漂亮但是是他的她不帅气但是是她的他
[bù piāo liàng dàn shì shì tā de tā bù shuài qì dàn shì shì tā de tā]
This implies a deep love and acceptance beyond outward appearance; she may not be conventionally beautiful but remains his beloved just as he might not be handsome yet remains hers, celebrating inner beauty over superficial traits.