We should always look to extend forgiveness towards people who have wronged us, as many times as they are willing to come repentful and sorry.
I'm a Christian and follower of the Bible which says a number of things about forgiveness:
“I will forgive the for the wicked things they did, and I will not remember their sins anymore.” Hebrews 8:12
“Get along with each other, and forgive each other. If someone does wrong to you, forgive that person because they Lord forgave you.” Colossians 3:13
“Yes, if you forgive others for their sins, your Father in heaven will also forgive you for your sins. But if you don't forgive others, our Father in heaven will not forgive your sins.” Matthew 6:14-15
“Then Peter came to Jesus and asked, “Lord, when my fellow believer sins against me, how many times must I forgive him? Should I forgive him as many as seven times?” Jesus answered, “I will tell you, you must forgive him more than seven times. You must forgive him even if he does wrong to you seventy-seven times.” Matthew 18:21-22