So, in case you missed it, Ronnie Ortiz-Magro went and got himself into trouble again.

That in itself isn't a shock, since Ronnie has been on a serious downward spiral for a good long while now.

But the story about what actually happened is pretty darn intense, even for him.

Late Thursday night and into Friday morning, Ron and his girlfriend, Jen Harley, had some kind of issue, as they often do.

They were at an Airbnb with their daughter, 18-month-old Ariana, when they started arguing.

Things escalated, and Ron allegedly slapped and punched her.

She ran outside and started screaming for help -- there isn't an "allegedly" for this part, because apparently several neighbors called 911 to alert authorities of that part of the situation.

But instead of just letting her go, Ron ran after her with a knife in one hand and baby Ariana in the other.

Jen wouldn't listen, so he dropped the knife, went back inside with the kid, and locked the door.

When police arrived, they asked him to open the door, and when he refused, they broke down the door so they could make sure Ariana was OK.

She was, but Ronnie still refused to cooperate, so out came the taser.

He was pretty incapacitated, on account of being tasered, so he was taken to a hospital before he was taken to jail and booked on kidnapping charges.

What a ride, huh?

A terrible, horrifying, just inexcusably awful ride.

Jen told police that Ronnie went off after doing some cocaine, which might explain his behavior a bit, but it's obviously not an excuse.

Especially when he and Jen both have such a history of being violent with each other, including but certainly not limited to that time that she dragged him with her car.

The whole incident honestly sounds terrifying, and it sounds like the worst bit of violence between them yet, which is really saying something.

But was it so bad that they could both end up losing custody of Ariana?

According to a lawyer who spoke with Hollywood Life, yeah.

The lawyer, a family law attorney in California named David T. Pisarra, doesn't personally know Ronnie and Jen, but it's safe to say he's familiar with situations like these.

And as he explains it, Ronnie could be facing an additional charge of child endangerment for what went down, and if he does, then "the government may not allow" any kind of reconciliation between him and Jen.

We all know that they have a history of getting into these kinds of fights, breaking up, then getting back together and giving interviews and how they've changed and grown and how everything is fine now.

But according to this lawyer, "It's conceivable that the Department of Child & Family Services might not let that happen."

"DCFS could threaten to take the baby from them if she gets back together with Ron because she's putting the baby in a dangerous position."

"They could charge Jen with negligent parenting," he adds.

Additionally, "DCFS could require Jen to get a restraining order against Ronnie to protect herself and the baby from him."

But if Jen does decide to leave him for good, she has "a phenomenal case for sole custody," which makes sense.

"The prior abuse in their relationship is between them alone, but the fact that Ronnie was holding the baby while he's chasing Jen now involves the kid," the attorney says.

Going forward, she could potentially get one of two different kinds of restraining orders -- a criminal protective order or a civil domestic restraining disorder.

Either would be easy for her to obtain, and if she got one, it's extremely likely that she'd end up with sole custody of Ariana, with Ron getting some kind of supervised visitation.

View Slideshow: Ronnie Magro Attacks Jen Harley With a Knife, Gets Arrested and Tased By Cops

So it's looking like if Jen is finally done with Ron, he could lose custody of Ariana, but if she tries to get back together with him, then they could both lose custody.

And that's why you don't (allegedly!) do a bunch of cocaine and then (also allegedly) chase your girlfriend with a knife while holding your baby.