Thanks again AJ and Kat, I did go to my church last night and Divorce Care. The topic was "moving on". The emphasis on the topic was that we need to deal with the "trash" in our life, including dealing with and learning from the wrong things we've done in our marriage, also we need to deal with the emotions of anger, fear and anxiety, before we can even start to "move on".
I was not able to speak to the Pastor about my wanting to volunteer. Instead, after class was over, several of us sat down and chatted. I ended up volunteering my legal services to help 2 of my group-mates. One of them is an attractive red-head I've known for 6 months, a bit younger than me, who is always complementing me on my losing weight, and I think we are starting a bit of a friendship. And she is soooo normal (she has a job, is intelligent, and funny), which is very attractive to me right now.
Yes, I get how having someone of the opposite sex in my life as a friend can have a strong pull. A new source of motivation to get in shape - I think I better get to the exercise room today!