Backstory:
Ex left me 9yrs ago for one of the women he cheated on me with, he then spent the next 6 years trying to get back with me but i refused. We have a 11 year old whose life he's been in and out of all these years. He's now had 2 children with the same woman, i try my best for DS to have a relationship but the mum (who knew about me during the affair) won't allow it so ex brings the eldest to his mums for DS to see, which has only been about 4 times (eldest is almost 2yrs).
Anyway i try to co-parent with ex, i try to be civil and considerate even dropping the amount of maintance CM stated to help him out this year and he hasn't paid last months and paid me less than we agreed between April - June. He's hardly seen DS too.
I had his mum shouting at me on Wednesday saying i don't want DS to have a relationship with their side of family, bear in mind for YEARS i took DS to her house and back while ex did nothing and cut her off too for this other woman and got in touch last year because i told him to speak to his mum. I've had his mum and siblings crying to me for years ex won't see or speak to them. Ex MIL has now accused me of stressing my ex out even though i don't speak to him, unless regarding our DS (i try not to speak to him and leave it between ex and DS but ex always contacts me). Apparently he is going through alot in life and unhappy etc (according to him & his mum) but that has nothing to do with me, he turned up at mine end of June claiming to love me soo much and full of regret, but i just made him leave. He's always asking DS questions about my non-existent love life yet i dont ask or care what he's up to.
I'm fed up of trying my hardest for him and DS to have a relationship, i go out of my way to help him out and yet he lies (as usual) to his mum and then i suffer verbal abuse from both of them. I'm really considering just ending the child maintance so i don't have to deal with him. He can see DS whenever he wants its between the two of them to sort out their arrangements. My ex and ex MIL are bullies, they constantly gas-light me and i can't deal with it anymore.
I almost considered suicide today (DS is with my mum for the weekend) as i just think its best if im around for them to hurt me. I didn't do anything to deserve all this, i REALLY try with ex and his family yet I get nothing but abuse. I've been crying on and off the last few days as they are causing me great stress and it feels like it won't end.
Would it make sense to cancel Child maintance? I know DS is entitled to it and it will be a bit tight for us but we can live off my wage. I just think sometimes its best to just walk in order to keep my sanity and ex no longer has any "control" over me. Please help i don't know what to do.