I'm really trying to move on but... 

I'm trying to get positive influences in my life so I recently signed up on Facebook to find old friends that I haven't seen in a while.  It has worked really well until just this week.  The ho that my stbx is screwing around with has been sending me messages through Facebook, I ignored the 1st one, but the 2nd message had to do with my weight, she made a point of saying "I'm 110 lbs, what about you?" and that she knows she looks good, I didn't know what she looked like until I saw her pic on Facebook, she is the typical nasty white trash that hangs out in bars every weekend.  She is 38 or 39 but looks 10yrs older, fried looking dirty blonde hair and she looks like she doesn't have bottom teeth or wears dentures, I'm not sure which.  I am overweight, but I have been working on it, all to help myself look and feel better.  My stbx says he is still attracted to me and that was never an issue, but it still hurt.  I am choosing to ignore her 2nd comment and I need to see if I can get her blocked from sending messages to me.  She is the one that is wrong for what she did, I know it takes 2 to have an affair, but there is nothing worse than a person that goes after someone who is married