He wondered if he said something wrong to make her blush, but then let go of the worry. She was a grown woman and quite capeable of telling him off if he said something untoward. He nodded and hit the switch on his image inducer, reverting back to a more human face. He was still testing the device, after all, and this place definitely didn't seem like the place to appear a strange blue monster.
"Food sounds lovely. And... well, I'm not at all familiar with inter-dimensional physics, but I can't imagine it would be the two beings themselves that would be the dangerous thing to come in contact. Presuming they are atomically ordinary humans, that is. Off the top of my head I would think the far more dangerous thing would be the energies used to bring them through whatever sort of wormholes meeting and reacting negatively to each other. Though, of course, the theoretical paradoxes of meeting oneself has been explored often in literature.