Infidelity Support Group
Any relationship in which one partner engages willfully in sexual relations with another outside of the partnership is considered to have experienced infidelity. This breach of trust is often traumatizing for the faithful partner as well as the relationship, and support is often needed to heal emotionally and to decide whether or not the relationship should continue after...
http://www.dailystrength.org/groups/rebuilding-marriage-after-infidelity
this is a page with people in various stages of rebuilding if your still looking to explore that path. If not, there are also plenty of those who chose divorce here and are in various stages of healing through that here on this board. You'll find rebuilders here too.
You may be able to forgive, but you will never forget. The pain and memories will get less over time.
Did you clear up all or most of the questions, and concerns you had about the affair? Where is this best friend of yours now, has she left your circle of friends? Is your husband completely devoted to rebuilding with you?
Can you pinpoint what may be some of the hurdles you're dealing with that are stopping you from emotionally reconnecting with your husband?
Wishing you well.