Warning- VERY LONG
My relationship with my son is bad. To be honest, our relationship has never been good. I have never been able to meet him/click with him on any angle at all. My dh has a strained relationship with our son/his son. I use the word strained because it's a marginally better relationship because they are the same sex and they like cars.
From an early age, I suspected he had some kind of special need because I could never get any eye contact with him and could never connected with him. I remember pushing him in a swing around 18 months?, looking and smiling at him for some kind of reaction and getting noting back? Again sitting on a mat rolling a ball towards him and him totally ignoring me my facial expressions? In hindsight, he was unimpressed with most items/toys apart from Yugioh (he was obsessed). At this time, I felt I had no relationship/connection at all and I remember saying to my health visitor who was visiting me during an anti natal visit, that I didn't think I loved my son? 
Infant school was difficult for him. I had his hearing tested which was fine. Finally, a year 3 teachers had a word with me. The teacher said for 6 weeks my son wouldn't sit on his spot on the carpet. SHe thought he was being naughty until she finally realised in her opinion, he didn't actually know where his spot on the carpet was! She referred me to the SENCO who assessed him to be above average in his reading and comprehension age and there was nothing they could do for him because he wasn't behind in his work!
I sent him to the speech therapist because they can assess his comprehension. Again he did well in this test. I decided to move schools because although the school was brilliant hollistically, it wasn't very disciplined and I thought my son would benefit from clear boundaries.
The move was ok in his first year there but they mixed the classes up the next year and instead of being with the kids he'd just made friends with, he had to then start all over again and this unsettled him and he was bullied. He was always in trouble from then on with missed homework and messing around in class. He left with decent stats though? We paid for Karate for him hoping to raise his self esteem and give him a goal but he gave up after a few months. He was an absolute natural at it and amazed the instructors with his speed and agility!
. Again, he was unimpressed
.
I knew starting Secondardy school would be difficult for him because in my eyes, he has some kind of special need although nobody has articulated/diagnosed this preferring to say he has attention problems. Special needs children have difficulty changing routine and classrooms and sure enough, he found this/finds this difficult.
My son is in Y10 now and he is constantly in lunch/after school detention, constantly late for school even though we live round the corner, has accrued nearly 12 weeks on report, doesn't wash and isn't bothered about how he looks. He forgets EVERYTHING. I am constantly picking up the pieces for him; liaising with teachers, sorting things out for him it goes on and on.
We argue about everything. I was saying to him the other day that I was going to buy him a coat HE needs and WANTS. He was arguing about this too! 
There are arguments in our house all the time, it is never ending. I tell my son I love him every day not to make myself feel better but because I reflect on the arguments and the atmosphere and I cringe at the damage harsh words may have caused him. I just don't want him near me. See i've just typed this and it isn't strictly true. I do want him near me but as soon as the argument develops, I want him away from me. I've tried all the tricks; ignoring him doesn't help as he follows me. Also, I need to keep on to him with school work deadlines and these are MASSIVE conflict areas. School have told me they will expel him if it goes the way it did in Y9 
I want him diagnosed as I truly believe he has special needs and I want proper help and guidance with him and a reason for all these years of nightmare and if not, well I am prepared to look at things in a different light?
Our relationship with our DD is fab.
ps. other bits and pieces:
When we are driving around our home town (quite small) in the car, he doesn't know where he is?
He sees things in a very black and white way, very fixed?