Keeping Up With Tristan Thompson’s baby mamas:

Khloe Kardashian‘s baby daddy, Tristan Thompson, was court-ordered to dish out almost $10K/month for his second-youngest son, Theo, that he had with fitness model, Maralee Nichols (while he was dating Khloe.)

The deets:

Reports from TMZ state, “Tristan will pay $9,500 a month in child support and also cover some of Nichols’ lawyer fees.”

As far as who will care for Theo, “Our sources say Maralee will have sole custody, and while they haven’t figured out an official visitation plan yet, those talks will come in the near future.”

Such a skeeze:

In case you forgot, Maralee sued Tristan for child support, even claiming he offered to pay her $75,000 in hush money.

Speaking of cash that Tristan is willing to fork out, let’s chat about Tristan’s mountain of child support …