DR JL, How about a little more details. I can't tell if your are M or FM, how long were things good and why, why do you think things changed, activites that you once liked but do not do anymore, new things that seem to keep you from connecting, time you spend together doing things, children-his/hers/ours and so on.

Have you read
DR Divorce Remedy By Michele Weiner-Davis 2001
SSM The Sex Starved Marriage By Michele Weiner-Davis 2003
PM Passionate Marriage
DB Divorce Busting By Michele Weiner-Davis
The Proper Care and Feeding of Husbands. Dr. Laura Schlessinger, 2004
The Five Love Languages, Gary Chapman
Resurrecting Sex, by Ph. D. David Schnarch 2002

Do you know about the concept of a "Love Bank" and "His Needs, Her Needs" http://www.marriagebuilders.com/

I found DR Divorce Remedy By Michele Weiner-Davis 2001, and this site the most useful because it tells you what not to do and then what might work is small steps. BTW, Do not look for monumental changes.

OG Lou