Is there anyone to talk to?

I am so sad, depressed, and disappointed with my life. I'm really at wits end. The only thing keeping me from doing something extreme is my young child. My marriage is a joke. I don't love him and certainly have no feelings for him because of all the hurt in 22 years of marriage. He insists on e-mailing old girlfriends and letting him them know the feelings he still has for them or reminiscing about the past. The latest one involved him telling a old girldriend that he's been e-mailing and secretly driving to see that they would have had tons of babies together. He only gave me 1 and that was after 16 years of marriage! How am I supposed to feel?!?