A difficult question 2 ask. it's more advice i'm seeking? i was thinking of have sex with a stranger... ?

ok i'm in a loving relationhip with my man of 5yrs. i know the sex isn't the same as it was when we first got together. who's is?i was a bit of crazy girl b4 we got together. i love my man but i just want a crazy time in bed. advice would be gratefully taken