If you didnt start it , then you should have no problem.
Drain it well though, dont leave any petrol residue in there,but get as much as you can out of it.
More importantly do not let other half / anyone else know!
Too late there !!! I thought I'd do the honerable thing!! and tell him - hopping mad was not the word!!!!!!!!!Kept saying something in the vein of "women and machinery huh"!