She didn't leave because he was balding. She wasn't in love for quite a while, and the fact that the balding started gave her an excuse to leave. Sure, it made her lose attraction, but the main reason she left was because the relationship was stale.
Ffs there are women who stay with their men after they get in terrible accidents or catch diseases that deform them significantly. And you're telling me she would have stayed if he didn't merely bald? Lol
There are many players who are bald. Take Mr Locario and Player Supreme for example.
On the other hand, I am quite glad I have a thick head of hair. My uncle's all kept their hair till the age of 70 so I know I won't bald anytime soon. Despite this, I only started getting proper succsess with women when I worked on my demeanor and inner game. Just goes to show looks aren't everything.