Searock you keep coming back to this issue and it is obviously making you unhappy. No matter how you try to justify it and rationalise it he is not meeting your needs emotionally (for whatever reason) and it is unlikely this will change.
If you are seeking something more then you must set yourself free to find it. You may find it, you may not, but is the situation you are in sustainable? You say you should just 'accept' it but you know you can't do that so don't fool yourself.
Have you tried telling him straight out that you feel *true love* for him but the fact he doesn't seem to feel the same love for you is a big problem for you? Maybe communicating that a bit better will help him understand the brevity of the situation, ie you are thinking of walking away because of it.
Some people are drains and some are radiators... Keep clear of the drains and hug the radiators!