F.,
From your previous posts, you have been dealing with this person for a long time. I am not sure what type of work you do, but from you mentioning lab and procedure, I suspect it is some medical office. He obviously does not like you, it is just his personality or you are having a lot of absenteeism due to you having to take care of your child that is causing them to cover for you alot. That can cause irritation. It might be too that you are too sensitive to what he does or think and if he can text you over your time (previous post) and you respond, means that you are giving this person more control over you than necessary. You are there to do your work and act professionally and do not let the coworker get under your skin. If you send a meeting request out to do a procedure and he does not come, then that's not your problem. Why are you letting his decision to not respond bug you. That's because you are poisoned already by him in the past that every single thing he does gets to you. You have to focus on doing your work, be cordial and let them bicker in the corner if they have to. I think you are encouraging his behavior toward you by giving what he says and does so much attention. Ignore and do what you have to do. If he is constantly negative, then counteract that with positive. Respect wins respect.