Make My Girlfriend Dirty / Sweet Girl, Dirty Secrets, chapter 24
>GF cries after being double teamed.
>MC begins to doubt and might actually think he's wrong.
>Leaves GF behind in the stalls.
>MC tells his doubts to childhood friend.
>Childhood friend tells MC to break up with GF.
>MC contacts GF, who is sick, and tells her to meet him.
>MC breaks up with GF.

From the GF's POV, she endured all that sexy stuff for the MC for nothing.