According to the truth, if she has a boyfriend, she will understand, refuse the kindness of other men, and then keep a certain relationship with them.
But she didn't. She enjoyed the process as if she had no place to meet anyone. She was invited to play and eat.
Because she knew that these men liked him, she did so, but she didn't refuse and took it for granted.
In addition, I think girls in nightclubs are too complicated, because the environment can change a person, and I'm sure you know that.
So I think it's better not to keep it, because you will quarrel again because of these things in the future.
Unless she is really willing to change for you, or you don't care about everything about her, it is impossible for people to be realistic and not care.
I hope my suggestion is helpful to you.
Have a nice day.