His behavior is really aggressive, when I picked up my son today, my ex came out dressed only in a pair of pajama pants and screaming obscenities at me over nothing. My son had pooped his pants and had obviously been sitting in it for a long time, it appeared his pullup hadn’t been changed all day. I don’t think my ex has been sleeping or eating and his behavior is really bizarre – one day he’s telling me he loves me the next he’s shouting and acting crazy. I can’t just stop letting him see our son, I need proof not just a suspicion. What can I do?