Though I'm a Michi fan, I think it is Neev. His love is unconditional and unquestioning.
When Mils was ready to divorce her for the first time so that she could go back to Neev, it really wasn't that big a sacrifice for him as he didn't realise the depth of his love then...just that there was an implicit understanding bt MP that could be made to work...not the mad love and passion that exists today.
Now, he wouldn't be as generous to make a similar sacrifice like Neev has done.