We all know that Romana Singer is New York's biggest pot-stirer. She's not afraid of a little trouble or confrontation.

But her ex, Mario Singer, is currently having a whole host of problems in his personal life, and Ramona isn't to blame.

Mario left Ramona for his mistress, Kasey Dexter, and it is not working out. In fact, it's apparently so bad that the police were called.

According to a police report obtained by RadarOnline, police were called when Mario Singer and Kasey Dexter got into an explosive argument.

"Singer advised that he got into a verbal altercation with his live-in girlfriend," the responding officer wrote.

See, the context is that Mario issued an eviction notice to Kasey upon discovering that she had allegedly cheated (via spy camera!).

“Mario stated since the [eviction] notice, [Kasey] has been acting erratic and belligerent."

Technically, eviction isn't always something that happens between traditional landlords and tenants, but it sounds like this was more of a squabble.

"Mario further stated he was worried that the altercation could become physical."

The officer spoke to Kasey, who was apparently very worked up over the situation.

"Several times during my interaction with [Kasey] I had to tell her to calm down and let me speak."

It's not always easy to transition from a heated argument to a calm report.

"[Kasey] remained uncooperative during my investigation."

If Mario wanted a girlfriend who was more mature, perhaps he shouldn't have cheated on Ramona with a woman 30 years younger and then run off with her.

Kasey apparently did divulge some personal information to the officer.

Including revealing that a major point of contention was "her infidelity within the relationship."

The good news is that the officer confirms that the altercation did not become physical.

If a couple yells at each other, their relationship is probably toxic and they should likely break up. 

But if there is physical violence -- and it has been alleged that Mario has been so violent in the past that it resulted in Kasey getting a fractured hand -- that's much more serious.

All the same, the officer requested that Mario spend the night at a friend's house.

We wouldn't quite say that Ramona got the last laugh, but it is notable that Mario's relationship that began with cheating has now run aground due to ... you guessed it, alleged cheating.

RadarOnline's source confirms that Kasey stepped out on Mario.

"She did cheat on him. She felt so alone in the relationship."

And, as the insider reveals more, it sounds like this relationship was doomed from the start.

"She wanted to get married and have children, but he told her, ‘Don’t ruin your body.'"

If you want different things in life and have totally different priorities, you might not make the happiest couple.

It also sounds like he wasn't honest with her.

"He would tell her they would travel everywhere, but he gave her false promises."

That is a story that we've all heard in countless tales of affairs that started full of hope and romance and ended full of bitterness.

Though the reports of past abuse between Mario and Kasey are alarming, perhaps their toxic relationship is finally at an end.

Ramona may take some satisfaction from this knowledge. She's no stranger to schadenfreude.