you say u have been cheated on before i i understabd ur gunna be weary, it sounds like u just need to talk to her, her moods might have changed because of the work, i know it sounds dumb but when someone kicks up my routines i get stressed cause im not used to having new times and stuff to do things. i think u shuld definatley talk to her about it... but dont accuse her of cheating or liking someone else cause if she isnt it may cause major riffles in your relationship.
hope this is useful

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