My dd was 1 when my husband & I got together. We also have a son & he doesn't treat them any different & has always referred to them as "my kids" not "my son & step-daughter"..they call him "dadda". My dd goes to her bio dads every other wknd where she has a little sister who goes to the same school as my dd & son. The school is having a daddy/daughter dance & it falls on my wknd with her.Normally my ex & I will just "switch" days when things like this come up. Last week my dd says "Mamma,do you think dadda would take me to the dance"? I had happy tears in my eyes! Especially after seeing the look on my husbands proud face when I told him! Well,yesterday my ex text me & asked to switch days for the dance. I don't know what to say because I don't want him to get offended & confront her & make her feel bad. She's a very smart & emotional girl & I really try to make things as easy as possibly with her 2 homes. What would you say or do?