I've been dating my boyfriend now for 9 months he has a recently turned 6-year-old brat daughter. I have a 10 year old daughter. His idea is to combine households in the future not immediately but that's his idea to blend the families if things go well.( I'm in no rush)  I think his daughter is a little brat unfortunately. I maybe have forgotten what 6-year-olds are like and trying to figure out what's normal what's not. She is 35 lb overweight and has been a big concern of mine as to why my boyfriend has not addressed it although he says he is.