'I was suspicious of my best friend's new mate at her hen's party. Weeks later, she proved me right.'

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We all have that friend who takes things a little too far on a night out. Maybe you even are that friend.

Getting sloppy drunk? Forgivable. Crying about an ex? We've all been there.

But sometimes a night out goes so far off the rails it crosses a line… the kind that gets you uninvited from the wedding.

Tessa* had a front-row seat to the chaos.

She's good friends with the bride, Sara*, and was tasked with organising the hen's night in Melbourne a few months before the overseas ceremony.

One of the friends invited was Aly*, who Sara had got close to when they lived nearby during the pandemic.

"None of us had ever met her before," Tessa told Mamamia.

Aly was "a bit sad" about a recent breakup, but otherwise seemed to be "totally normal".

Watch: 8 signs of a toxic friendship. Post continues below.

The evening started smoothly. Everyone got along over bottomless drinks at dinner before the group headed to a nearby club.

"Then things changed," Tessa said.

They settled into their booth and ordered a bottle of vodka and mixers. The staff brought it out with a light-up show and a sign that read, "Happy Hen's Night Sara".

As you'd expect, it attracted attention — and some of it was unwanted.

"These two guys walked over and one was saying, 'Do I say congratulations or my deepest condolences?' because he was married," Tessa said.

At first, the women were friendly, hoping it would be a brief interaction. But the men didn't seem to get the hint, and Aly was the only one enjoying the attention.

"He was sticking around too long and my friends were like, 'He needs to go', but he wouldn't leave," Tessa said.

The night quickly turned sour.

It got so heated Tessa eventually had to ask venue staff to remove the men from the booth. But they kept coming back.

"It got to the point where the bride-to-be was giving them the finger and they were giving the finger and saying, 'F*ck you'.

The minute the male attention disappeared, so did Aly's interest in the evening.

"She was looking super bored," Tessa said.

"Everyone else was having the best time. She was the only one who was miserable."

Then came the moment that made Tessa's jaw drop.

Tessa left the group to go to the bathroom and Aly followed. When she came back out, she saw Aly "up against the wall, making out with someone".

It was the married man who had been causing all the trouble at the booth.

"She definitely saw us notice her, but she just went for it," Tessa said.

Listen to Mamamia Out Loud hosts discuss girls' trip etiquette. Post continues below.

Aly returned to the group, completely ignoring what had just happened, sat down and kept drinking.

A few moments later, she announced she needed to sleep and lay down in the booth in "proper napping position".

"I said to the bride, 'She's your friend, you need to tell her to go home or wake up because the staff are going to kick her out'," Tessa said.

Sara, still trying to keep the peace, sent Aly home.

"She's normally okay, although we've never got drunk together," she told the rest of the group.

But one thought stuck in her mind: How's she going to be at the wedding if this was just the hens night?

The final straw.

A few weeks later, Tessa asked a favour of Sara: to not seat her near Aly.

"I don't want to have to babysit her," she explained.

Turns out, she didn't have to worry at all. Aly had got herself uninvited.

The nail in the coffin came just weeks after the hens night when Aly invited Sara and her fiancé to a party.

Aly had a new boyfriend by this point, but rather than focus her attention on him, she spent her night flirting with the party host.

Sara tried not to judge. If Aly wanted to make a fool out of herself, that was her business.

But then Aly turned her attention a little too close to home.

"She came to my friend's fiancé, got real close to his face and she started stroking his beard," Tessa said.

"She's like, 'Have you always had a beard? You look really good with it.'"

The fiancé looked at Sara, hands up, like, "I'm not doing anything. I did not encourage this."

Aly had been around Sara's fiancé before and never acted in such a way. But for Sara, it was the final, unforgivable straw.

You don't want to cross Sara, Tessa warned.

"If you piss her off, she can be quite spicy," she said.

Sara went off.

"She was like, 'What the f*** are you doing with my fiancé? Do you think this is okay? I thought we were friends?"

Then came the final blow: "You're uninvited to the wedding. Don't even come."

The wedding ended up being the most fun Tessa has ever had. The best bit? No babysitting Aly required.

*Names have been changed for privacy.

Feature image: Getty.