Again? Still? Why is my hand being forced?

So, it appears she is now reaching out to another old boyfriend/flame.  The pattern is exactly the same.  I know, I know.  She is going to argue that it isn't - but it is.  Why does she have to reach out period?  What the hell?  It starts out with little "innocent" emails.  Then, the event blossoms from there.

Whatever the intent - why would she do this again?

I wish I could think of an analogy.

If you get caught speeding, the next time you are down that road, you have to slow down.

If you are caught with your friend's drugs, the next time they ask you to hold a package, say no.

Why put yourself in this situation - even if it is innocent?

I am so beside myself I do not know what to do.