8 red flags in 'Friends' that should have sent Rachel running from Ross

Even though he is a recent divorcee and new father and still hopelessly in love with Rachel, Ross returns from China with a girlfriend in the season two premiere, "The One with Ross's New Girlfriend." 

Did he date around or work his way up to a committed relationship? No. Instead, he dove right in like a stage-five clinger. 

Ross repeats this pattern when, a mere five episodes later, an unplanned date with Emily in "The One With Joey's Dirty Day" becomes a full-blown engagement  in the aptly titled "The One With All The Haste."

(And let's not forget when he randomly — and illegally — adopted a monkey in "The One With The Monkey.")

Rachel meets an Italian hunk named Paolo during a citywide blackout in "The One with the Blackout." When Ross notices their undeniable chemistry, he lies to Paolo about his relationship with Rachel by saying that they are "a thing." When Paolo doesn't get the memo (he doesn't speak English fluently,) Ross resorts to insults. But as it turns out, "crap weasel" was lost on Paolo, too. 

"Crap weasel"??? Okay, weirdo. 

Personal and professional boundaries meant nothing to Ross.

When he found out that Joey's video camera had accidentally taped Ross and Rachel having sex, Ross neither told her nor destroyed said tape.

A few seasons later, he put his career at risk by dating one of his students and continued to date her even though her father (played by Bruce Willis) disapproved. He even had the nerve to visit the dad's cabin with her against his wishes.

He also hijacked Carol and Susan's anniversary and ate all their dinner in "The One Without the Ski Trip," and took over Joey and Chandler's apartment in "The One Where Ross Moves In." 

And when Monica explicitly told Ross not to bring his monkey to her and Rachel's apartment because the pet had peed on their table before, what does he do? He brings his monkey to the apartment.

Fed up with serving coffee, Rachel decides to finally pursue her dream fashion gig in "The One Where Rachel Quits." She does so with the help of a handsome man named Mark who helps Rachel get a job as a buyer at Bloomingdale's.

Enter Ross' insecurities: He thinks that Mark is only helping Rachel to sleep with her, so proceeds to mark his territory. He also complains whenever Rachel prioritizes her budding career over their relationship and even shows up at her job unannounced, seeking attention.

In "The One With All The Jealousy," Ross spots Mark kissing a woman and physically separates the two before realizing the woman is not Rachel, but Mark's girlfriend.

Rachel and Ross get married after a drunken weekend in Las Vegas in "The One in Vegas" and "The One in Vegas - Part 2." They agree to annul the union, but Ross never mails the paper, keeping yet another secret from Rachel. 

In "The One Where Ross Hugs Rachel," she finds out and is justifiably angry.

Whenever Ross spoke to Rachel, his intelligence trumped hers — and everyone else's for that matter. He loved pointing out what she didn't know and scolding her about what he felt she should be doing.

In "The One With The Racecar Bed," Ross discovers that the only thing he and Rachel's father have in common is their love of roasting Rachel for not having renter's insurance. 

Weird flex.

Ross was a paleontologist who woke up and chose violence daily. Though he was a grown man, he frequently threw temper tantrums that got physical, like when he fought a pair of randos over some seats in Central Perk in"The One with the Bullies.

There's also the scene in "The One Where No One's Ready" when he freaks out on his friends for being late to his work event. He yells at Rachel so loudly that she refuses to go with him to the event until he offers to drink a vat of raw fat in penance. 

Speaking of yelling, Ross screamed at his boss for eating his sandwich in "The One with Ross's Sandwich," losing his job in the process. 

His aggression was so intense that it may have lost him custody of his son Benjamin, according to some fan theories.

Their breakup quickly spiraled into a feud. Ross bickered with Rachel about who had custody of their friends. Then in "The One with the Tiny T-Shirt," Ross made a big deal about getting his stuff back in front of everyone. 

Let's not forget that he even dated Rachel's little sister Jill, played by Reese Witherspoon. The two were supposedly cool by then but petty is petty, and dating the younger sis of your ex is the textbook definition.