NIce to meet you Slick. First I would find a therapist who could help you work thru some of the past issues you are dealing with. Diagnosis of any kind needs to come from a professional.
As far as your friend goes, perhaps you and he need to talk. i don't know how close your relationship is or how long you have seen him, but i believe that communication is very important whether dealing with any kind of abuse history or not. being able to discuss what is happening with you and talking about it is healthier than ending the relationship and running with no explanation. If you both decide that it is too uncomfortable to continue the relationship under the circumstances then so be it, but talk with him.

these are just my thoughts.