Apparently US Weekly has something against the phrase humping like rabbits or horny for each other or many of the other phrases that come to mind when a couple is sharing an intense passion. When they describe Halle Berry & Olivier Martinez they make it sound like Fabio is reading aloud to them. An intense passion. Of course it is intense. They have been dating for like two weeks. It better be intense. After just two weeks together if you are doing anything but passion then you better be prepared for long long dry spells.
So, when US says they have an inside source who says the couple are passionate, it is not much of a stretch. I doubt they are hanging out all the time because they are dying to watch movies together and discuss them for two hours followed by some Scrabble.
If US Weekly had some imagination their source could have also said, "they eat out a lot and for some reason they are always in bed." Probably canoodling.