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general::
Phrase(s): drift away (from someone)
Fig. [for someone] to begin to be less of a friend and more like a stranger. (See also drift away (from someone or something).) • He began drifting away from me a few months ago, and I haven’t seen him at all in the last three weeks., Phrase(s): drift away (from someone or something)
[for floating people, animals, or things] to move away from a particular person or thing, on the surface of water. (See also drift away (from someone).) • We watched the boat drift away from us. • He was drifting away on the ice block and there was nothing we could do.
McGrawhill's American Idioms And Phrasal Verbs