So did satan help me?

about two years ago i denounced christianity. since then i've dropped about twenty pounds and have gotten the best physical shape of my life. i managed to improve my marathon time by over two hours from when i was a christian. i also have a much nicer girlfriend. my relationship with my family and friends has never been bad, but since becoming an atheist i do feel our relationships are much more honest. why is satan doing so much nice stuff for me? will he continue to treat me so nice if i go to hell?