Thank you so much everyone! You have been such a massive help! I now know what i have to do..and kind of the reason i came here was to help me get perspective and make my judgements a little less clouded.
I am pretty sure i have this now.. it just may not be the easiest thing i will do but i have to be realistic both for my Son and Myself.
I thought it was as black and white as 'Stay together' or 'break up for good' but it doesn't have to be like that. I need a break, time to get my own mental health sorted, something i haven't done. I have never recovered from the horrible trauma i went through with my ex, and this is having a direct impact on my current life. I have to sort myself out, that way i can be the Mummy i need to be to the most precious thing in my life, my Son, he deserves that!
I also feel as though the pressures of me and a relationship has not helped my boyfriend. I am snappy and jumpy and generally scared, and have frequent panic attacks, he is mentally unstable(his words) these things are never going to go together are they? He says he is currently experiencing his first psychotic episode in 4 years, surely this isn't a coincidence? He needs to get himself better for him too.

We BOT have to get the help we need and like has been mentioned, if we are meant to be together, we will both know its because we truly want to be together and not just because we are co depending.
If i mean as much to him as he does to me, and as he says i do, then he will be willing to wait for me as i am for him.

Personally i know i need the space and we are still at a stage where this is possible, its not years down the line were we are living together and its almost impossible to split.

I hope i am making sense. I do feel i am thinking a bit more clearly.. and i don't think i would have done, without all of your help, so thank you so much