If Desmond had to be completely honest, the idea of making love to Claire certainly did cross his mind, but it was only a passing thought. One driven by equal parts love and lust, wanting to spend some pleasurable, intimate time in bed with her. However, Desmond didn't think Claire would like their first moment alone together since they'd met to end up being this crude and unromantic; he was very wrong.
While it wasn't as drastic as Claire throwing herself on him to rip his clothes off, it didn't take more than an hour during which they chatted, mostly about girls' adventures in this world, before Claire give Desmond a pretty direct hint of what she wanted to do.
For the next three hours, Desmond and Claire spent their time in bed giving each other love and pleasure lavishly without a care in the world. It was as if they both couldn't get enough of the other person and tried to quench their thirst for affection at any cost.