Peter loved Tony Stark, he always had. It's why he dedicated himself to his studies all so he could take a job at SI to get closer to the man. What he hadn't expected was for Tony to actually talk to him one day in the staff break room. Apparently the coffee machine in his lab had broken down so he came here to make himself some. It seemed like destiny to Peter. An opportunity to actually talk to the man and to try and get himself noticed as more than just another worker. And it must have worked as Tony kept coming down to the break room for coffee when after his lab's coffee machine had been fixed, and he never failed to strike up a conversation with Peter whilst there. Peter was overjoyed at this. The frequent conversations allowed him to get closer to his boss until they could almost call themselves friends. But most importantly Tony now trusted him enough that if Peter made a cup of coffee ready for him he'd happily take and drink it. So all it took was one day with not many people about to lace Tony's drink with something to make him sleepy and to 'help' the man up to his penthouse. After that it was simple to use Tony's private elevator to go down to the man's garage and drive away. And now Peter had Tony all to himself without anyone getting in the way.