我曾经帮过你这么多，你居然背叛我！

Wǒ céngjīng bāng guò nǐ zhème duō, nǐ jūrán bèipàn wǒ!

I’ve helped you so much, and you actually betrayed me!

我不会原谅背叛过我的人。

Wǒ bú huì yuánliàng bèipàn guò wǒ de rén.

I won’t forgive people who have betrayed me.

我绝对不会背叛我的好朋友。

Wǒ juéduì bú huì bèipàn wǒ de hǎo péngyou.

I would never betray my good friends.