他爱着他的她她想着她的他
[tā ài zhe tā de tā tā xiăng zhe tā de tā]
Means he's in love with the girl who belongs to him and she's thinking about her boyfriend, emphasizing the reciprocity of mutual affection. However it also indicates that these two 'she' and 'he' are actually different pairs of couples. The meaning could get lost or twisted due to ambiguous language here though.