Relationships are often built on acts of kindness and reciprocity, but sometimes, generosity can feel like a one-way street.

After months of giving a co-worker free rides, one employee learned that this colleague wasn’t interested in ever returning the kindness.

Read on for the full story.

AITA for not giving my co-worker a ride after he didn’t spot me one dollar at the vending machine?

I usually give my co-worker a ride on the way back from work, usually driving 5 miles out of my way per day to drop him off at his place because he doesn’t have a car.

I’ve been doing that for about two years now and haven’t asked for anything, and he has never offered.

But he soon found out he couldn’t count on this co-worker in return.

Yesterday, I was at the vending machine and wanted a soda. I was short a dollar and had left my wallet in my car.

I would usually go get my wallet, but it takes forever to wait for the elevators at my workplace, so I asked if he could spot me a dollar for the soda.

His colleague’s reaction was quite surprising.

He straight up refused and said, “Just use your own money, man. I don’t really give money to friends or co-workers, sorry.”

I was taken aback by that comment because I’ve probably spent well over $1,500 in gas over the past two years for this guy, and he can’t even spot me a dollar just this once?

So he decides to cut off the rides, which led to even more animosity between them.

I got pretty upset by that, and once it hit 5, I told him I’m not giving him free rides anymore.

He seemed upset and said I was petty.

AITA?

Some people just don’t seem to understand the value of reciprocity.

Reddit is sure to get a kick out of this one.

Relationships are a two-way street — even work relationships.

The way his coworker responded ended up revealing a lot about his character and overall attitude.

The employee is definitely not in the wrong for matching his stingy coworker’s energy.

This user can’t believe someone who benefitted so much from someone else’s kindness could react this way.

What seemed like a simple favor turned out to be a revealing moment of utter selfishness.

It became abundantly clear that this relationship had been lacking balance for quite some time.

If you liked that story, check out this post about an oblivious CEO who tells a web developer to “act his wage”… and it results in 30% of the workforce being laid off.