Communication problems


I was just wondering if it is quite common for ADHD people to sometimes not always communicate effectively. An example,me and my partner were having a discussion one night and I said something that unintentionally pixxed him off. Instead of openly saying I had pissxd him off he just said, I think things should go back to the way they were before. I took this to him wanting to end things and when asking him what did he mean by it, he replied by saying it didn't matter, is this common too? Obviously I left feeling upset and confused. The last time I saw him he was very cold and abrupt towards me and he told me what I had done that evening to piss him off and when asking him why didn't he say something at the time,his reply was,I just didn't, but I am here now arnt I, hence to say we are no longer together, I must admit I text him some pretty awful things after seeing him the last time and feeling quite rejected when saying he didn't think things would work out between us and that he was too selfish to have a relationship and he could not understand why I left him that evening. I am not sure whether him saying he was too selfish to have a relationship was just a defense mechanism because I know he has been hurt in the past. I instantly regretted what I had text him other than the fact that I was feeling really hurt and confused because we had got on so well.I have emailed him several times apologizing but he has just given me the cold shoulder instead. However, I find it quite weird because there has been some occasions where he has rode pass me on his motorbike and just stared at me but not angrily. he lives quite close to me.

The other night I couldn't sleep properly and he gets up for work quite early and leaves just after 5 am, he was coming out of his place on his motorbike one morning and I just happen to peep out my window without him noticing as there were no lights on and he would not of been able to see me,lol, however, instead of riding straight pass he sat there on his bike for a few seconds looking over at my window before riding off, I don't want to appear rude to any ADHD people on here but is this the norm?, it just seems rather strange because he has ignored my emails and yet behaves likes this and I am not sure what to make of it all. I was really hoping someone on here might be able to shed some light on this as to what might be going on here and whether the communication problem I mentioned earlier is also an issue with ADHD.