Oric did not know what he was expecting from Willow, she had always been thick skinned, and it was one of the reasons why he was drawn to her. Despite the fact that there were plenty of much more handsome boys in their circle of friends as teens, she only had eyes for him, no matter how badly people teased her about it.
When Willow had chosen to give herself to him all those years ago, Oric was nervous and unprepared, but he was also a hormonal teen and he could not resist. Instead of waiting until they could properly protect themselves, he entered the naked girl on his bed, believing that he could remove himself when the time came, but the time came unexpectedly, and he was 'unsuccessful'.
"We didn't change the sheets," Oric said through gritted teeth. Back then, he had been so nervous that Willow would become pregnant that his main focus shifted to getting them to a pharmacy, quickly; he did not consider anything else.