Ryan and Marissa 4eva.
The couples included on this list are ones that went beyond flirtation, mistaken kisses (i.e. Kirsten and Carter) or one-night stands (i.e. Ryan and that waitress). Past relationships that didn't play out on the show were also excluded (i.e. Kirsten and Jimmy). They either had to have an ongoing sexual relationship or a committed relationship.
26. Marissa & Volchok
Truly a terrible, terrible relationship. Sure, we had that one nice moment where we found out he rented The Sound of Music and their sex scene was crazy intense, but it ends there. He was a terrible boyfriend who partied aimlessly, stole money, and kissed another girl on senior prom night. And, oh yeah, he kind of murdered Marissa. So this relationship was most definitely the worst.
Fox
25. Trey & Jess
This Bonnie and Clyde relationship wasn't much better than Marissa and Volchok. But at least it didn't end with manslaughter charges, right?
Fox
Oliver & Natalie
LOL JK.
Fox