as a girl, i think i'd be a bit grossed out by a partner using the same toys with me that he used with an ex. why? beats the hell out of me...i've shared toys with friends and had no probs with it (with proper cleaning of course). but something about sharing them with a guys ex just feels creepy to me.
however i always keep the toys after a split and i've enjoyed them with new partners. i guess i'm a hypocrite