They had sex in a bathtub and with raised body temperature, apparently the possibility of pregnancy could come up. I do believe the whole reason behind the condom was, "lest anything befall you." So even he was concerned with STDs. I'm pretty sure this was the same book where Monica and Robert were working on getting pregnant while in a hottub, and Robert was wayyyy older than JC.

Later in ID (thanks to moons_storm for reminding me) -- the only reason for using a condom with Requiem and Byron was because Anita did not know them, they'd only been in the country for two weeks prior. Apparently after she gets to "know" guys, then a rubber is optional, I guess. Because Anita does not do casual sex, nooo. She needs to get to know her men as people too.

Meanwhile, down in the basement, I bet she doesn't even know about Damian's collection of hand-painted Lord of the Rings figurines and sometimes that makes him cry.