Going on holiday with your mates is always a great time, and if you all pool your funds together and pay an even share of your flights and hotel costs, it can be pretty cheap too.
But one woman has been left livid after her best friend decided to invite her boyfriend on their holiday without asking - and said he won't be paying a penny toward the trip.
The woman explained she and her mate were supposed to split the cost of their two-bedroom villa 50/50, but when her friend announced her boyfriend was coming too, the woman suggested they instead split costs three ways.

However, her friend argued it wasn't "fair" because her boyfriend would be staying in the same room as her, so wouldn't "cause any extra expenses".
The woman was then accused of trying to make her friend "pay more than her fair share", despite the costs actually being cheaper per person if the bill was split between three instead of two.
In a post on Reddit, the woman explained: "My friend and I planned a vacation together to a tropical destination. We booked a two-bedroom villa and agreed to split the costs 50/50. Everything was going great until a week before the trip when she told me she had invited her boyfriend to join us without asking me first.
"I was annoyed that she didn't discuss it with me before inviting him. However, she argued that she should be able to bring her boyfriend along since we're both adults and he wouldn't affect my vacation experience. In fact, she insisted that he would be sharing her bedroom, so there wouldn't be any extra costs for accommodation.
"Despite my reservations, I decided to go along with it. But then I suggested that we should split the costs three ways instead of 50/50, as there would now be three of us on the trip. She disagreed, stating that since they're sharing a bedroom and not causing any extra expenses, the 50/50 split was still fair.
"I think it's unfair for me to pay half of the costs when there will be three of us on the trip. However, she argues that her boyfriend's presence won't increase the costs and that I'm trying to make her pay more than her fair share."
Commenters urged the woman to "back out" of the holiday if she can and said her friend was "taking advantage" of her by making her subsidise a third person's stay.
One person wrote: "If they went alone they would have to pay 50/50. Now BOTH of them have to only pay 50% total because you are subsidising them. I'd back out since it will no longer be fun even if it was split three ways. Don't feel bad about making a last-minute announcement - your friend sure didn't."
While another added: "Please do not help pay for your friend and her boyfriend to take a vacation. Back out if you can. I doubt you will enjoy yourself and you will resent them for taking advantage of you. They absolutely are taking advantage of you. It is two people getting a trip for the price of one while you are subsidising the third person."
And a third posted: "Yeah, this would be a non-negotiable for me. A week before the trip! I'd cancel it instead. It wouldn't be about the money but the lack of respect for me!"
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