Thank you all for your generous and loving feedback, it is truly incredible to receive such forthright support from total strangers. To answer your questions:
I am not or ever will be willing to participate in an open relationship.
I understand that seeking 'strange' is a an attempt to re-build his ego and can't imagine how he would/will handle the blow his ego will take when he can't perform. I have asked him the question, if it worked with someone else would he come home and end our relationship or keep seeing people behind my back. If it doesn't work with someone else (which is probably won't, his case is severe) will he continue our life together, but only because he feels he has no choice? He said he hasn't thought about all that, he's just been thinking about trying it with someone else for about a year now, to see if he can get hard with someone else, maybe he's just 'been there too many times' with me. Coincidentally, it's been about a year that he has been unwilling to even try intercourse with me. Oral sex efforts stopped about 6 months ago when his disease progressed to the point that he really can't achieve much level of erectness at all.
I really love Hawk's story about fishing and keeping the best. If my BF was looking for someone better, I could almost understand it, but he has come clean on his 3 attempts over the past year and I have seen the few women he reached out to and they are really icky. When I asked him about this he said he's not looking for better or worse, just different. Boy, it really hurt to hear that. He would risk losing everything for something that means nothing.
I am very beautiful and an excellent partner, his rationalization to that is that even Halle Berry, Christie Brinkley, Eva Longoria, etc. get cheated on. Men just need 'different'.
(This all came out because he make an attempt to hook up with an old friend on an upcoming business trip to NY. He told her that I still lived here, but only because I wouldn't leave, that we were not in a relationship any longer. She took it upon herself to email me and let me know she was going to NY so that I would be prompted to move out. I called her and confronted her and she made this clear. I feel like she did me a favor because, up until that moment several days ago, I thought everything was going along fine and we would be together forever.
The only thing that is keeping me here at this moment is that nothing has actually happened yet - yes - he's made 3 attempts, but was unable to get anyone to cooperate. Once the deed is done, so am I.
I keep making all of these excuses for him, he's turning 60 in June and this is hard for him, he's lived an exciting and naughty life on the road in the music business and settling down may be boring for him, he has a disease that has taken away something that defined him and messed with his head. But, these are just excuses, aren't they?
I'm beginning to see the cruel truth that if I was the one who was unable to have sex, he would leave me in a minute. No, probably 30 seconds. And the fact that he can look me in the eye and tell me that he wants to see if someone else can get it hard for him is too much.