Okay so If someone, anyone at all, has been rude to you in the past, like really horrible, and suddenly they come back to you a couple of years later as a changed and good person and ask for your forgiveness and you know, they really regret what happened, forgive them. Only when you know they're telling the truth though I'm saying this because I have been a horrible and terrible person to this one girl in my class like in 2nd grade(I was a big meanie in 2nd grade)and i told her many traumatizing stories I really really regret it so bad, I asked her recently if she could forgive me and she said she didnt mind at all, but I know deep down she does