想说爱你却说了对不起
[xiăng shuō ài nĭ què shuō le duì bù qĭ]
Expresses one's regret for not able to clearly convey their true affection to another because maybe he/she said something they did not want, which makes him/her feel remorseful. This conveys a sentiment where love remains unspoken, instead apologies had to be made, possibly for hurting the loved one in unintended ways.