I think for me it was easier to deal with when Karma finaly sat me down and said "There are things I do with you that will never feel the same with Cricket, there are things I do with her that will never feel the same with you. You are two different women with two different needs and personalities." Somehow it just kind of clicked for me. I can think back to other partners and know that certain things felt different with certain partners. Didn't make one better or worse, just different.
That made things a lot easier for me. It goes back to feeling special. At least for me.