Cinder, in my case we got along until the new gf moved in, she is also going thru a divorce. She has made several snide remarks regarding how deseprate I was and I WAS. I am not nearly as desperate now but she still makes remarks and even told me once awhile back that I could NOT talk to my xh and hung up on me, so she doesnt allow him to speak with me. So I would say Yes its not about ow but they sure can add to the mess.
