Hi - I recently provided a reference for a former employee. This employee was very difficult and there had been a whole string of issues during their time with us. The reference I provided wasn't bad, but could probably be described as neutral (It was a tick box form and the ticks went in the middle box.) The recruiting employer then followed up with a phone call where I gave some constructive comments on their queries but was generally positive. I have now heard directly from the former employee that the job offer has been withdrawn due to my reference being unsatisfactory. They are asking me what happened and threatening to follow up. I'm worried this could get messy. All I did was provide an honest reference but I'm concerned I could end up getting hauled over the coals. Any advice gratefully received.