I can forgive easily,but i never forget, nor do i really ever trust again. It depends on what they do, but usually i try my best to make amends or stubbornly give them many chances even if they might not deserve it. However, if i see they dont take it seriously or waste their chances or show no effort, i stop wasting my time with them altogether. It's not a grudge imo when it's self preservation, and just knowing better. I think i rather be around those who genuinely care is all. Though I don't mind being in their presence, unless they've done something horrifically nasty to me that merits it, but if I do find myself by them, I can and do act maturely and decently.