David Harbour seems to be taking it easy after a difficult few months … with a companion putting a grin on his face in New York City earlier this week.

The actor hit the Big Apple Tuesday night … trying to keep a low profile while walking through Times Square.

Harbour’s got a hat and thick jacket on … keeping his head down and focusing on conversing with the woman at his side, who’s bundled up in a long white coat.

Earlier in the day, Harbour was snapped enjoying a smoke while taking a stroll through the streets of The Big Apple. He was all alone, which has been a common theme for him since his divorce from Lily Allen played out over the last few months. You may recall, Allen was seen smooching another guy — Jonah Freud — at a holiday party last month.

As you know … Lily and David separated early last year — before she alleged he cheated on her in her album “West End Girl.”

On top of his marriage ending, Harbour landed in the headlines after his “Stranger Things” costar Millie Bobby Brown reportedly filed a bullying and harassment complaint against him. Millie talked about how much she enjoyed working with David during the recent press tour for the show … seemingly shooting down the report.

Plus, we viewed video of Harbour stealing a guy’s hat at a bar, spiking it to the ground and then ranting about the Iraq War. Harbour has a documented history of bipolar disorder … and our sources told us they wouldn’t be surprised if the stresses in his life caused an episode.

Looks like the Israeli Air Force is down a Black Hawk helicopter … because one of their choppers fell from the sky and crashed while being airlifted … and it’s all on video.

Footage shows another, larger helicopter towing an IAF UH-60 Black Hawk helicopter through the air when the harnesses appear to suddenly fail … sending the Black Hawk into a nosedive before it crashes to the ground.

Desmond Scott’s mystery make-out partner — yeah, the one he was locking lips with just two days after we broke the story his estranged wife Kristy hit him with divorce papers — has officially been identified.

Sources familiar with the situation tell TMZ the woman getting hot and heavy with Desmond last Sunday is Marissa Springer, a 24-year-old local Houston model who’s also currently in school working toward her master’s degree in business.

We’re told the two met for the first time earlier that night at Houston bar Sante through a mutual pal … and Marissa had no clue about Desmond’s online fame. Our sources say it was also her understanding that he was single at the time.

As for how things escalated so quickly? We’re told there was an instant spark … and with a few drinks flowing, it turned into drunken fun that heated up fast. It’s unclear whether this turns into anything more.