The main couple from 'Weightlifting...' play supporting characters in 'Cheese...' and the plots have more differences than similarities, but if you look for college drama, those two are one of the best I've ever seen.
These two dramas aren't plot-wise similar at all but the comedy in these dramas is really similar. The overall feel in these two dramas also is really similar. If you liked Entourage I'm sure you'd like The Lover as well. And vice versa.
Both main leads have parted/broken up with each other in the past due to misunderstanding. Now they are going to fall in love once again with the female lead having memory lost and they will try to clear up the misunderstanding. Both have second male lead who likes the female lead and protecting her after being hurt.