刚才注意到版主把我前一贴置顶了。谢谢。

我也回头好好读了几位的分析和建议。
任我为的分析很到位，基本就是这样的情况。
也非常感谢FutureKey的建议。

如果，我还在公司待下去，我会采纳Kaolin007的策略，最适合我的情况。
我把Kaolin007的建议copy如下：
try to get along with both...
just think about it, GM2 and S might be gay partners...

why do you have to fight against S? You goal in this company is NOT competting with S. Your goal is to make money and support family. I don't think it is wise to leave this company just for this. There is no place perfect in the world.

Get alone with S will help both your life and career.
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非常感谢。