Until now, I don't know what made the childhood friend suddenly changed his personality and became a womanizer instead. According to MC, he used to hate girls because he was traumatized by being abandoned by his mother in the past so what changed? The author didn't elaborate more on this.

But in a sense, the childhood friend's betrayal was also a liberation for MC because she didn't actually loved her friend in the first place. Maybe it's a pity or obligation but definitely not love.

Well, I hope it wasn't too late for her to get her true love. We wouldn't know though since the author left the ending open.