A word of caution is appropriate here. Support groups are great and precious. Especially so with situations that are not subject matter for discussion in every environment. Divorce and being single are painful issues, where support is needed. However, together with the pain and suffering that so many experience (both divorced men and divorced women), there is also anger and a natural desire to seek revenge. Many who go through this issue are apt to express that anger, often toward their ex, and just as often by advising peers regarding their own issues. Such advice is coming from people in pain, not people experienced with helping others through tough times. This creates the possibility or likelihood of much additional bitterness, through guidance and peer pressure to take negative actions.
Yes, I have observed this occurring many times. As much as I feel that support groups and systems are critical, I find the damage they can cause alarming. Buyer beware.