The photophysics of fulvene has been extensively studied due to the interesting shape of the potential energy surfaces (PESs) of the ground and the first excited singlet state. The two surfaces cross twice, with one sloped CoIn associated with the stretch of the C=CH 2 bond and one peaked CoIn following the motion of the dihedral angle, still involving the same moiety. The interesting features are connected to the different relaxation profiles to the ground state, highly characterized at the CASSCF level, with different nonadiabatic methods.