Should i stay with him?

My boyfeiend has a child and the mother is not very nice, hes going thru solictors n stuff etc etc, i find it really hard as i find shes always gettin in the way by bf gets down about it and then takes it out on me, i know its harsh but i couldnt possibly give a poo about her and their baby(well 2yr old) im rele finding it hard 2 cope with.Ive told him tym n tym agenb to get back wit er n b a family but e wont. were waiting to see if we r gettin the flat we applied for and i wnat 2 start our own family but hes happy with just his one child!!..i dunno weather to walk away now though i relle do wanna be with him but its just so hard i would relle apreciate it if you would give me abit of advice n if you are in the same boat den plz share thanks luv kaylee x