Nick Lashaway, a 28-year-old actor from Hopkinton, was killed in a car accident on May 8. Lashaway appeared in many roles over the course of his acting career, from appearing as young Mulder in a 1998 episode of “The X-Files’’ to playing small parts in “The 40-Year-Old Virgin’’ and “The Office.’’ In 2013 he appeared on the HBO series “Girls,’’ and his costar, Lena Dunham, mourned his death on Instagram this week. “Nick was such a talented, funny and kind person and we were so lucky to have him as a part of our Girls family when he played Frank in episode 207,’’ Dunham wrote. “We will always remember the week we shared with him, his playful smile, his easy instincts, how much he made us laugh even when we had to stay up all night in the woods. We are sending love to his family and friends and feeling such gratitude for his gifts. RIP sweet Nick.’’