Is there any romance in the Alex Rider series?

There is some romance in the Alex Rider series, but it is not a major focus. In the first book, Stormbreaker, Alex has a crush on his classmate Sabina Pleasure. However, this crush is unrequited, and Sabina is not interested in him. In the second book, Point Blanc, Alex meets Mia Vale, a Russian girl who is also a spy. They develop a close friendship, and there are some hints that they may have romantic feelings for each other. However, their relationship is never explicitly romantic. In the third book, Skeleton Key, Alex meets Emma Darcy, a British girl who is also a spy. They start dating, and their relationship becomes more serious over the course of the series. However, it is still not a major focus of the books, and Alex's main focus is always on his missions.