Re do they normally turn nasty?
Ime and from rl and reading on here I'm afraid many of them do unfortunately
Some are confrontational some are more passive aggressive
My ex did a bit of both.
Pass agg - emptying bank accounts, taking the car literally in middle of night without telling me leaving me stuck in a rural location with sod all transport, no shops nearby, taking other valuables from our home while I was out, being late/not turning up for contact, not paying maintenance
More confrontational - turning up drunk/hungover for contact, turning up drunk and battering the door blaming me for the marriage breakdown, accusing me of neglecting our dd to ss and gp (yes really! Thankfully they saw right through his crap), accusing me of having been a terrible wife and mother while we were together...
Fun!
I'm long past it all now, hell at the time though.
When I moved out of the marital home (army quarters) I wouldn't give him the new address BECAUSE of the aggressive behaviour and he tried various methods to find out inc applying to the court using nonsense reasons to try and force me to disclose this and having me followed by a private detective! Who was either crap or actively decided not to give him my address I'm not sure which.
He was absolutely livid when he had to repay the money he'd taken from the bank accounts and my half of the value of the car and other valuables and blew up my phone and email that entire weekend and threatened not to return dd after that contact. That was probably the lowest point. My ex mil managed to talk him down and I got dd back a day later than I should have by which point dd was in a right state!
This was the point at which I refused contact - knowing he could and prob would take me to court over contact but also knowing I had a stack of evidence by that point of the fact he really didn't actually give a shit about dd beyond using her to get to me.
He didn't even bother starting the wheels in motion for contact for 8 months and then again was livid when the court agreed with me that with such a young child and no contact for almost 12 months by that stage there was no way he was getting unsupervised contact and overnights straight away as he was requesting! He actually shouted at the judge!
Suffice to say they don't call it "being estranged" for no reason, he became someone not only I didn't recognise but even his own parents and siblings.
His relationship with them hasn't even fully recovered since, one of his brothers doesn't speak to him at all as a result of his behaviour at this time and the huge amount of stress it caused his parents (his dad was also dealing with a major health issue at the time which ex really didn't consider)
Going through a divorce with someone who is also a parent to your child is incredibly difficult, but that doesn't mean you shouldn't do it
And it is a case of "through" as in "if you're going through hell keep going"
After my divorce I worked in the wedding industry for a time. One of the clients (young) once said to me that they thought getting divorced was too easy in Uk.
She was marrying less than a year after meeting her fiancé and her family didn't approve of him for very valid reasons! (Addict, ex con - Yep I know!)
My reply was "getting a divorce is far from easy, getting married however is!"