Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Some background. My son is severly affected with autism. He is 12 and has a mind of a 2 year old. He is compleatly non verbal, reacts only to simple one-word commands, and only recently I managed to get him to use the toilet. On top of that he is going through puberty and became very agressive.
My wife left me half year ago. Our relationship was long gone, and we only stuck together because of him. We agreed that I will take care of child due to his strenght and agressivness, she simply could not handle him anymore. Little I knew she had an affair and moved in with her lover straight away. 
She claims that she cannot take our son and was spending time with him in my flat. When I found out about the affair, and that she lives with a partner I said enough. I will not longer let her in. She can take him whenever she wants, let her boyfriend help her if she struggles. She calls me an asshole. Am I? Im still single BTW.

not letting my ex spend time with our autistic kid in my apartment