If you haven't picked up Divorce Remedy yet I highly recommend it. There is a chapter on there about this very subject. The truth is no one not even your counselor has the right to tell you that you are overreacting. If this is a serious issue for you then there are three choices:
1) Do what you have been and be miserable. 2) Detach (GAL and do things for yourself) which may pique his interest and turn his energy towards you. 3) Prepare to separate or divorce. But keep in mind with any ultimatum that you must be absolutely willing to follow through. So think about this one hard before trying.
I hope this helps. I have to give credit to Michelle since I basically paraphrased the book:)
H 30 (me) W 28 Married 9 yrs 2 children EA found out on 7/5/07 ILYBNILWY 8/25/07 The unexamined life is not worth living -Socrates