Hannah was "The Bachelorette," but she didn't find love on her season and broke up with her then-fiance.
In the clip, we see Hannah ask everyone how they are doing, while they look on in shock.
But she says she's there to talk to Demi.
"It seems like Hannah came here with a purpose," one of the guys says, adding it's giving him anxiety.
One of Demi's suitors, Derek, talks about how much he cares about her, wondering what she's thinking in talking to Hannah.
As we saw last week, Demi lets viewers in on something that she’s been wanting to let out for quite some time: She is bisexual.
While Derek is supportive, trailers have teased a relationship Demi may have brewing with another woman on the island.
"Bachelor in Paradise" is a two-night affair for the next few weeks, airing on Mondays and Tuesdays at 8 p.m. EDT/PDT on ABC.