Briana Dejesus has a message for Javi Marroquin on the occasion of her ex-boyfriend becoming a father for the second time.

But it isn't exactly congratulatory.

A day after Javi and Lauren Comeau welcomed a baby boy into the world, DeJesus took to Twitter and strongly accused Marroquin of cheating on her.

Sort of a strange reaction, given the blessed development for the former Teen Mom 2 cast member?

Yes, but Briana thinks she has new proof that Javi stepped out on her with Comeau earlier this year.

You see, Javi and Lauren dated for a couple months in the summer of 2017.

After they split, Marroquin started getting down and dirty with DeJesus, a relatively new star on the aforementioned MTV hit.

And then not long after they split, Javi returned to Comeau's bed.

But DeJesus now says on Twitter that the relationships overlapped. To wit:

Fans will likely remember that Briana traveled down to Miami for some plastic surgery on the date she cites above.

Her and Javi were very much on the outs at the time, but he showed up in Florida to support her, making it seem as if he wanted things to work out between the D-Listers.

So now we can do some math:

Comeau gave birth on November 15. She was due on December 1, however, which is 10 months after Javi and Briana were in Miami together, attempting to work things out.

According to DeJesus, this means Javi and Lauren were clearly back in touch, if not already having sex again, considering how soon she got knocked up after this Florida trip.

And according to DeJesus, this is evidence that Marroquin's feelings for her were totally fake, as you can see by her follow-up Tweet before:

Again, there does seem to be a bit of time in between Marroquin and DeJesus' break-up here.

Moreover, the status of Javi and Briana during the infamous Florida vacation remains unknown. Were they really, truly, 100% together?

We may never know, but Javi, at worst, wasted VERY little time in moving on from DeJesus.

But this doesn't exactly come as a surprise to anyone who has followed the rocky journey of Briana, Javi and even Kailyn Lowry.

We're pretty sure Marroquin was doing all THREE women at one point.

Lowry, though, did send an actual note of "Congrats" to Comeau and Marroquin after their unnamed son was born this week.

Those two, who share a son of their own, are on solid enough terms these days.

"It's been amazing," Marroquin told Radar Online about becoming a dad once again, adding:

"I even shed some tears. For those that don't know, I'm not an emotional person anymore at all and just seeing my son come out really had me in my feelings."

That's great to hear.

Still, will rumors of Javi being disloyal to Comeau ever go away?

We continue to send the couple our best wishes -- but other people continue to have questions...

DeJesus, for her part, has moved far on from Marroquin.

She only brought up this romance again in the context of Javi having his child on the specific date we mentioned before, as it would be impossible for anyone in her position not to reflect back on how her relationship with the multiple-time father added.

About two months ago, DeJesus even went public with a new boyfriend, making it as clear as she possibly can that Javi is in her past.

And he remains there, don't get the reality star wrong.

She even linked to an article about Javi's kid on Twitter several hours ago.

So, no, Briana isn't mad.

Consider the meme she just shared on social media in response to anyone who thinks otherwise:

It's just, well...

... also consider this timeline:

July - September 2017: Javi meets and begins dating Comeau. Then they break up.

October 2017 - January 2018: Javi starts dating Briana, before they also crash and burn. Hard.

January 2018: Javi and Kailyn probably have sex again, based on their own quotes and admissions.

March 2018: Javi begins dating Lauren Comeau. For the second time.

May 30, 2018: Javi and Lauren announce they are expecting.

November 15, 2018: The baby is born.

It would be weird for Briana NOT to have a few questions, wouldn't it?