At that point any answer could have been an additional lie.
The only answer Richard would believe without checking: 'After you drove off and left me there, I called Alexander. He picked me up and we spent the night at (his place/ the suite you reserved/ ...). I almost had forgotten the energy and libido of younger men. No, I'm not insensitive, I was just happy someone was there for me after you just took-off for no reason at all'.