Head canon after highschool
All three work in a garage>Marie straight up grease monkey, who likes to bug Double D at his internship.>Lee manager at the garage. Will work on cars if have to. She loves to pester Eddy at the convenience store he works at, but absolutely hates when Eddy ask for free repair for the van>May works part time as a receptionist and also intern (same place as Double D) Marie is a little jealous they work so close together, but Lee told her to calm her tits. May only break is working at the video/comic shop Ed works at. He doesn't pay too much attention as he is always recommend random stuff at costumers.
Although not dating the Ed's are a lot more tolerable to the Kankers. Often when doing a van road trip they'll reluctantly take the Kankers in case the van brakes down, which it often does, Marie can fix it. Lee and Eddy take turns driving.