Because men live their lives looking to be aroused.
No offensez but she wasn't using him any more yhan he was using her. If men did not.seek to have their manhood validated by grasping the attention of beautiful women, this would not happen. They are like dogs with a bone and no self respect.
You'll notice it's rarely if ever average or ugly women that are able to do this. Or are able to.
Men create thisnproblem with their objectification and then blame women for it's consequences to them.