NEW BRITAIN, Conn. (Court TV) — The man accused of killing his girlfriend with his car will not testify in his own defense, his attorneys revealed on Thursday before resting their case. Cooper Ouellette sits in court on Nov. 5, 2026. (Court TV) Cooper Ouellette, now 21, was 18 when his girlfriend died after the two went out for the night on May 20, 2023. Prosecutors say the victim, Sophie Ringquist, 17, was tossed from Ouellette’s truck twice wh…