I think it's a case of them keeping out of the way of the other girls and not cramping their style. 1 guy in an apartment with 6 hot girls can be awkward. I like the way they've kept themselves to themselves and obviously been out of the apt sightseeing during the day. He'll leave soon and she'll be back to normal. It'll be interesting to see if she'll carry on teasing now, or just go for it, considering she now shown us some epic views in the last few days...