Bonding my rabbit

Hi all.

A few months ago i got my first house rabbit. She is a girl called Khaleesi and she is perfectly happy she now has free reign of the front room.

She uses a litter tray with no accidents, we recently adopted a neutered male so she has company. Lando is currently in a cage in the front room as we have only had him for a few days.

Khaleesi lays down next to the cage and they keep touching noses through the bars is this a sign they like each other? She seems really happy since we got him running around and hopping abd jumping. How long should i leave it before trying them together?

Any help and advice would be fab