Will this really be the most dramaticBachelorfinale ever?

After a somewhat uneventful season, all signs point to the fact that were building to a big finale.

First, there was theABC press releasepromising a finale that will rock Bachelor Nation to its core.

Then theresevery previewthat shows Arie talking about how hes struggling with his final choice between Becca and Lauren.

And yet, thats somethingBachelorviewers hear at the end of pretty much every season.

But could Aries struggle be different?

After all, not every Bachelor says they feel like a monster at the end of their run.

In an interview withPEOPLE, Arie admitted, [My decision] might not be the most popular.

I know what you did, and I dont know how you could do that.

I just really dont understand.

But I really hope you found what youre looking for.

The question remains: What did Arie do?

Whatever it was, Arie admits that it was a mistake.

I know people are going to be hard on [me], he toldPEOPLE.

I made a mistake.

And Im prepared for the backlash.

But all I can say is I had to follow my heart.

All of the drama will unfold when the three-hour finale begins Monday at 8 p.m.

ET on ABC, followed by the After the Final Rose special on Tuesday night.