Did I make a mistake?

My boyfriend left me for another woman who was someone he was very close too, he realized he made a mistake and begged for me back, so I took him back, and now only a week later he's getting mad that I haven't moved on past the whole thing.. And is very insensitive to my feelings, even though I gave him the chance of a life time. ( and trust me I'm not the nagging type) Did I make a mistake?