The two have been dating for almost 4 years. Her boyfriend even planned the proposal timing too.

But the girlfriend moved in with her male cousin who she’s known for 20 years into the same hotel room—though she clearly said nothing happened.
Still, he chose to break up with her anyway, ruthlessly.
This is a real experience shared by a boy.

He said: In college, he dated his girlfriend for more than three years, almost four years— and their relationship has always been great!

The girlfriend has a male cousin— someone she’s known for over twenty years of the same-sex “friend” circle. The two families are neighbors too, and he also knew about it.

When they were kids, when the girlfriend’s family was struggling, that other person’s family helped them.

So over these years, he never objected to the two of them keeping in touch.

Because he thought: In love, trust matters more than control.

The year they graduated, the girlfriend, her male cousin (and another two female classmates) went on a graduation trip together.
A total of four people.

One man and three women—and he also didn’t object!

Until the night of the trip!

The girlfriend posted a video in her Moments (朋友圈).
In the video, the two people sat in the same hotel room chatting. The content was completely normal, with no flirting or anything ambiguous!

The boyfriend froze on the spot.

What he found unacceptable was that his girlfriend and her male cousin stayed in the same room— and with a setup of three women and one man.

That night, it was the first time he took the initiative to invite the roommate out to drink.

It was also the first time in his college years that he drank baijiu—his first time ever drinking baijiu in his life.

He said the roommate told him:

“I’m not doubting that she cheated.”
“I suddenly feel like she doesn’t even know what boundaries are.”

The next day, he still chose to break up!

After the girlfriend finished her trip, she came back to find him immediately.
She kept apologizing, kept explaining, kept begging for reconciliation!

She said:

“It’s just sharing a room—nothing happened at all.”

But he still refused!

Although while she was traveling, he had been planning to propose, but he ended up giving up.

In the end, the friend asked him:

“Is there really not a single chance you’d give her?”

He was silent for a while, then said:

“I can even accept her betrayal.
But I can’t accept her stupidity.”

If it were you, would you choose to break up because of this? Would you end a relationship that was originally really good because of something like this?