"The good news is that was probably the most -- I'm choosing my words really carefully -- it was kind of the most gentle separation, in that there was no animosity," Theroux told The New York Times in a profile published Saturday. "In a weird way, just sort of navigating the inevitable perception of it is the exhausting part."
"Neither one of us is dead, neither one of us is looking to throw hatchets at each other," he continued. "It's more like, it's amicable. It's boring, but, you know, we respected each other enough that it was as painless as it could be."
"It was heartbreaking," he added, "only in the sense that the friendship would not be the same, as far as just the day to day. But the friendship is shifting and changing, you know, so that part is something that we're both very proud of."
Aniston and "The Leftovers" star tied the knot in August 2015 after four years of dating. At the time of their separation earlier this year, the couple released a joint statement.
"In an effort to reduce any further speculation, we have decided to announce our separation," the statement read. "This decision was mutual and lovingly made at the end of last year. We are two best friends who have decided to part ways as a couple, but look forward to continuing our cherished friendship."
Speaking to NYT, Theroux offered some insight on what caused the split.
"These are actually in reality small events that take place," he said. "But everything can feel like 10 on the Richter scale if you make the headline big enough and salacious enough."
The "Maniac" star explained that since acting is "kind of a carny lifestyle," where you're often separated from your significant other, the split "doesn't have that seismic shift of an ordinary couple, where everything is, like, you have to tear a baby in half."
When asked if he's seeing anyone at the moment, Theroux replied, "Is this the part where I coyly raise an eyebrow and not answer the question?"