Chofetz Chaim Daily 16 Adar 4:11 One seeking info about a potential shidduch/partner may ask others, and they may say necessary info (See rechilus Chap. 9 for more detail). However you must explain why you are asking so it will be with proper intention. One MAY NOT ask those who do not like the subject.
Chofetz Chaim Daily 17 Adar 4:12 To repent for LH, one must ask subject mechila (only if he was hurt; socially, emotionally, etc.) It is impossible for a habitual LH speaker to ask mechila from everyone he pained. 5:1 If you see someone doing sins bein adam l’chaveiro, (ex. not lending money that he could afford) you must not tell anyone. * Editors Note: One must still take the appropriate steps of rebuke, etc with the seven conditions as will be elaborated upon in Chapter 10. This is especially important if one is found to be hurting another.