Would You Accept His From Your Long Term Partner

[MDWCT2018]

I have been in a committed relationship with my boyfriend and we have been living together for 8 months now .In the early stages he was in awe of me but he has since, become more comfortable with me.
He lives with me in my flat. we have a next door neighbour who is a single mother with a young boy. The mother is a little bit nuts as one would expect being on her own with her child, but she does 'strange' things too such as walking in the hallway to throw her rubbish in sexy slips etc. Hmmmm......
Her child is very sweet and cute, but makes a lot of noise and I mean A-LOT of noise. If he is not screaming and throwing things and whining, it is his mother.
I have complained many times about this to the landlord because these are tiny city flats with thin walls, not exactly the ideal place to raise a child. The mother doesn't work and they never seem to leave their flat. My boyfriend agrees the woman is crazy but thinks I am a b***h for complaining about the child. Believe me, it not something I have done lightly but at 3 am it is like a banshee wailing and is scary. My best friend has said that for whatever reason my boyfriend has taken this Childs side (even though obviously my fight is not with the child) and that I deserve more loyalty from him. My friend has basically said that my boyfriend has chosen this child over me .... do you see it that way?