Is it normal to feel this

i'm a married man 17 yrs ago & i'm 40yrs old i'm straight but two years ago i began to feel like i want my wife playing and fingering my asshole but ofcourse i didn't have the carriage to tell her so i went out with a girl and i told here to do this to me i loved it soo much and now i'm dreaming to make this with a guy so is it normal or i' m now a gay????