Roman isn't sure what he's hoping for when he propositions Gerri in the hotel room. It just seems like the logical thing to do, they're alone together, there's a bed right there. He doesn't know what he would do if she actually said OK, let's do it and hung a Do Not Disturb sign on the door.
As it is, Gerri just wants to talk business, asking if he's clean enough to be interim CEO. Blah blah rocket launch, blah blah girls from cruises. Roman doesn't want to talk about cruises or Mo. He keeps up the seduction talk and just as it looks like Gerri might cave, she gets the call appointing her as interim CEO.
Roman already had a feeling that he'd talked his way out of the job on the phone to his father. He never could just shut the fuck up when required. He has a mixture of emotions: disappointment that it's not him, joy that it's not Shiv, envy of Gerri combined with being happy for her (and also a little turned on because let's face it, Gerri as his boss is hot).
"Can I be the one to tell Shiv?" he asks. "I think it would be nicer coming from me."
"Don't be too harsh," says Gerri, back in business mode. "She is my goddaughter."
"I'm just gonna tell her straight up. Not like I'm gonna sing a victory song at her." He's already composing the lyrics as he grabs his phone.