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So yea, if two magnets attract/repel multiple times(A LOT) will they lose their magnetism? If they don't break during the whole process?

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I don't know the material well enough to answer but check out en.wikipedia.org/wiki/Remanence and en.wikipedia.org/wiki/Coercivity and hyperphysics.phy-astr.gsu.edu/hbase/solids/magperm.html –  Brandon Enright Mar 29 '13 at 23:06

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Yes, they can. Here is a nice article about preventing that:

Care & Feeding of your magnet

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