Re: Breaking up teens and adults

Romancing a different teen would be the easiest method.

If you don't want to do that, check whether the game still recognizes them as boyfriend and grirlfriend. It should be stated in the boyfriend's profile, where the sentiemnts are listed. If they are still bf/gf, then the breakup option should show up in the pie menu under "Mean". I've heard (not experienced myself) that the option sometimes won't show up if the romance bar is already too low.