a friend told me it was possible to find mew in the same part as mewtwo and it was before fighting mewtwo it was like mewtwo stay in place and in the rock maze there is that true?
Not true. Without events, trading or migrating, you cannot obtain Mew in HG/SS. Sorry.
http://bulbapedia.bulbagarden.net/wiki/Mew
No it isn't in the spot.
Source: Experience
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