Cold and Orgasms

So today my bf and I were having sex after like a week of not having it because our schedules weren't on the same basis and he busts his ass at work and I'm in school while working. But it's been pretty cold, and we're both new when it comes to sex. I mean we're good with each other but we never had other partners (with exception to my trauma). And when he put on the condom he already said it was really cold and surprised him and we both laughed. And then when it came down to the deed, he came within like three minutes. Maybe even less. Which isn't a problem, it was really surprising because he's been lasting a while. He's guessing it might be because of the cold, so does the cold just make guys come quicker or easier? Was just wondering