All the guys talking about their ex's really need to read The Predatory Female by Lawrence Shannon.
I'm too lazy to type out what's wrong with what you're doing engaging with her.
These are just elementary rookie mistakes fellas, also it's my utmost belief that no grown man is on social media, let alone worried about what social media people will think if 'I do this then it will appear like that' that's straight up bytch talk.
Get off social media and don't entertain an ex GF ever. If you have a kid with her, play it cool till you get custody of your kid and then go completely cold on her