Who better than the Sirens?

Bruce should not have agreed and yet something compelled him to.

"Alright, Pamela"

Ivy: "I know just the place"

Ivy takes them to a remote and seedy location.

There Bruce is shocked to find Harley, in something more casual, not quite fitting for a business meeting, but Harley doesn't care.

And Selina, in a stunning dress.

Ivy's mind control over them has allowed her to arrange this. She thinks it's quite funny, that they'll help her and get nothing in return.

All 3 women have been enhanced by Ivy so they will currently emit pheromones. That plus, the women are ready being quite sexy is overwhelming Bruce.