I don't think speaking negatively about the ex is always a red flag. Maybe if he brings it up straight away and harps on and on about her.
My DH was a walking string of red flags according to some peoples standards, but actually turned out to be the nicest guy ever and a wonder father.
What if his ex genuinely is horrid? Is he supposed to pretend like she's not. My DH was a victim of domestic violence. His ex is an evil twisted cow. Everything he told me about her when we first started dating was spot on.
He did however not mention her until I asked. His kids have 2 different mums and he had nothing but praise for the other mum. Again 2 mum's coupd be seen as a red flag but he had a child at 18 so I wasn't about the judge him on something that happened when he was a teen.
You've been given some good advice. It really depends on a lot of factors.
I'd want to know how often he has his child. EOWE might be ideal in terms of you having time with him but I'd seriously question any man who was happy to see his child so little, especially if you'd like your own children.
Is the scheduled formal? If it's just a verbal agreement then there's potential that there'll be issues, especially when mum finds out he has a new partner. Although, if he claims they are on good terms and she's a good person then that might not be as concerning.
Does the ex call the shots. If he mentions anything about "not being allowed" to do anything in regards to his son it shows his ex exerts control over him and he allows it. I'd expect a decent father to have his own routines and boundaries with his child.
How does he manage childcare and work? You don't want to get into a situation where you're treated like a maid or nanny.
Controversial, but a man who says his kids come first no matter what would be a red flag for me. Yes, absolutely kids should be a priority but I don't believe the whole world should revolve around them and I actually think it's quite damaging for kids to think that everything should be dropped for their wants. You need to be a priority also.
I was never interested in dating men with kids. Heard too many horror stories and didn't like the idea of having someone ex in my life. But sometimes you can't help who you fall in love with and I can honestly say that meeting my DH and being a SM is the best thing that ever happened to me.