Im just not cutting it

Everything I say is negative, everything I comment is a dig, having a go, hurtful I’ve changed from being the number one fan to the enemy that brings my partner down.
My partner just recently moved with her 8 yr old son from a different country to stay with me. We’ve been doing the long distance thing for over a year and a half now. Things were great almost perfect given the circumstances. We saw each other 2, 3 times a month spend every day on the phone for hours on end it was like we were together even though we were miles apart.

I asked her to move over because I couldn’t stand the thought of being apart.

On the phone we would spend hours before we would get off, don’t know what we talked about but I’d enjoy sitting there sometimes not even talking just the sound of her breathing made me happy. From sunset to sunrise even somedays. 
We went through some things for her to get over but now she’s here, it’s like we just argue all the time, I can’t seem to say the right thing and I feel her tolerance of things I’d say or do is minimal. 
I love my partner with everything I have, would never make her feel bad intentionally or bring her down, nor hurt her in any way shape or form. 
Here lays the biggest problem. Everything we disagree with has something to do with her son. I know there’s a settling in period but it’s hard for me to let some things slip. Which brings us to our next dilemma. Do I just not say anything to him or about him to her because she’ll get mad or it may start another argument? Do I just sit back and watch my partner do her best. 

Do I let this child run this household and me walk on ice. We come from very different backgrounds hence why we see things a little different sometimes. Which makes things harder he’s not my kid i can’t treat him like my own cause he’s not, and il be stepping on someone else’s toes if I tried. but he is still living under my roof. 

I want to get closer to him but the way I know how doesn’t go down to well with his mum, wether that be the way I talk to him joke with him. I can never say the right thing. 
I need to fix this some how. I love my partner so much but I think we need to find a solution. I don’t want it to get out of hand.

# – 7

I see people who don’t see me.

I hear those who don’t speak to me.

I love people who don’t like me.

I give hours to those who don’t give me a second.

I believe them who don’t trust me.

I give to those that a greedy.

I forgive them that hate me. 

I trust in thee that created me. 

Because of thee,

I live, 

eternally.