Im going to try and make this as short as possible.

My boyfriend of 2 years hasn't ever been extremely affectionate. But it seems like before we lived together and when we first started living together things were different. I have a 2 1/2 year old son who thinks of my boyfriend as his dad because his isn't around and he plans on adopting him soon.
Right now until my room mate moves out were living in his house which is one bedroom. So after my son goes to bed were stuck in the same room all night because my son is a very light sleeper and he will wake up.
My boyfriend rarely does anything like cuddle. He never hugs unless I give him one and I don't remember the last time we kissed that wasn't just a peck unless we went out drinking together.
He tells me he loves me every day but I just miss the small things like he says since we're constantly together he wants to do stuff with his friends on the weekend, which is completely fine. But it's every weekend and me and my son always sit at home. One in a great while I'm invited but it's maybe once every month or two and he says since we live together we shouldn't have to go out.
He usually sits on the computer from the time he comes home until the time he goes to bed. Sometimes he'll be in a good mood and play with me and my son but then others he just wants to be left alone.
I don't know if he feels smothered because were literally together in one room 90% of the time because like I said his house is one bedroom and were waiting to move into my 3 bedroom house in a month or so.
I know there's no one else he works and comes home and if he's not he's with his friends and home early. Our sex life is gone too. The weekends is when we have sex and that's maybe once or twice lately if it even happens. I know he's tired, he is a mailman and walks the town everyday but I feel neglected.
I've tried to talk to him and he says he's heard it over and over and he's been the same person this whole time and if I'm not who he wants then to find someone who is who I want. I love him and I don't want anyone else I just want some affection... I can't remember the last time he's told me he appreciated me or anything... he says I'm too emotional and cry too much and that he's stopped drinking for me and my son and I appreciate that but why can't I have some affection every once in a while too? Help please