O.J. Steve has been so thoughtful at different points along the way.
I guess he knows there is more to your relationship than the sexual side so he is not intimidated by saying that you should find another partner(which takes real love to say). But you know, I expect what he is really trying to say is that he wants the best for you and doesn't want you to struggle. Perhaps he feels like you will only be able to do this with an extra pair of hands? Maybe its his way of getting some reassurance that you will be o.k.
Just keep telling him that you will be able to cope O.J. and he might drop the issue. I know your humour will carry you through if he keeps going on about the issue(smile).
You're right,every love is different and you won't find two relationships that are ever the same,but that doesn't mean you won't be happy in the far off future and you might decide yourself that you want to be on your own. My mum has never had or wanted another partner and is very happy.
O.J. try not to look too far ahead,you are doing a marvellous job chick.Baby steps..every day as it comes. Hopefully this is something you won't have to think about for a very long time.x.x.x