i am witnessing the death of a dream

it is best for my family that i stay married.  however i believe that my husband will never love me with the same passion romantic feelings that i feel for him.  he just doesnt seem 2 have those type of feelings for me.  i still love him.  i wish i didnt.  i assume that if i withdraw from him and stop loving him i will stop.  then maybe well b even.  maybe i wont have passion for him anymore.  it so sucks b/c i love him.  i think i can get over my hus having an affair,but how the hell am i supposed 2 get over that my husband loves me but isnt really in love with me.  could he really have an affair for 2 yeaars and be in love with me? I dont think so.  he says he is...i dont know whats his definistion?  y shd i spend my effort and time cultivating a relationship that will never include passion for me.  he thinks im attractive but sex with me is an afterthought.