I'm a bit stuck on how to understand 生まれ変わることがあるなら in the line below. The speaker's girlfriend has passed away.
At first I read it as him saying if he was reborn but then that didn't make any sense to me in context as it is his girlfriend that has passed away.
In this case then, what is the correct way of understanding this phrase in context? Is it "if she is reborn". or something more like "if reincarnation exists".