Assuming no other details are hidden, and you only have the following facts, would it be enough to classify the case as a reasonable threat?

* Person A and B are roommates.
* Person A is upset with Person B due to issue 1, and person A tells B to be careful next time or there will be "serious problems"
* Issue 2 arises and Person A is upset with Person B. Person A tells B that "This is 2 and you can guess what will happen with 3" (Just meant there will be an argument) and "You should be careful with me". Person B asks "What will happen on 3?". Person A replies "Nothing illegal. I'm a person of law"
* No other interaction happens, especially no face-to-face or voice interaction

I know a threat is dependent on intention, but would there be any reason for police to interfere, based on this exchange happening through text messages?