I was with my ex for 8 yrs, split up for about 2 now, have 1 kid. If I am truly honest with myself I think that I resent her and have strong feelings of anger toward her, but I usually suppress them. When my kid tells me he is sad sometimes because he misses his mama, my initial reaction is anger or disgust because why would he miss that worthless person? I know this is wrong - he's a little boy and it is perfectly normal for him to miss his mom and for her to be very important to him. But sometimes I can't help it and I just hope that I'm doing an ok job of hiding these emotions from my kid, although I know how sensitive they can be to our emotions.