[误] No matter how others may treat you, I\'ll always support you.

[正] No matter how others may treat you, I\'ll be always on your side.

注： support 一般指经济或行动上比较实在的帮助和支持，而 on one\'s side 则侧重于观点、立场等精神上的支持和一致。因此，这里用 on one\'s side 更符合愿意。