for me it was not a problem, after my H saw a baby attached to my chest and the feeders in the babies mouth he wanted nothing to do with that until they were weaned.
Nothing chases a man away faster then a baby attached to your boobs. While I was nursing my children My H wanted nothing to do with me in that way. Even after I weaned my children the let down still happened and the milk still sprayed, and the ends got huge ready to feed that baby, ya know.

Later it was hard to turn my brain off and think romance not baby. I nursed for a year and a half with the first child then while I was preggy I nursed my first child still, then nursed my 2nd child for 9 months. After child number 3 was born I nursed her for 2 1/2 years. When a baby is attached you it is not a feeling of sexual love it is a feeling of love, love for your child. (prolactin I believe it is)

We all have different feelings regarding nursing babies. And that is ok. Good luck with your decision and with the decision being the right one for you when the time comes.