Well I may have jumped to conclusions. I DID finally fester up the courage and ask him about it...he explained it further to me and once again reassured me there was no one else and we are very much exclusive. His story makes sense after he explained it again. I have a very hard time dealing with my own inner "fight or flight" response. I have been single for the past 6 years ie: no relationships lasting longer than a month or so. For me, it's like run because you're afraid of being happy with him eventually or seeing it through.