I don't know you as well as he does but,______ your friend,I advise you to think again.填As 还是like?

I don't know you as well as he does but,______ your friend,I advise you to think again.
填As 还是like?

应该是like,前面一句已经说I don't know you了,应该不会是朋友,那么只能是“像一个朋友那样建议你”的意思了,高中水平,仅作参考.