If you liked the Yamada-kun to 7-nin no Majo manga, the Anime-Planet community thinks you'd like:
Rando Musashi is a tough guy, an obnoxious karate star, the school troublemaker and... the most popular girl in school?! Rando was riding the bus home one day when a sudden crash resulted in a horrible wreck. He was immediately taken to intensive care under plastic surgeon extraordinaire Dr. Manabe, who treated Rando's maimed face. Yet unfortunately Dr. Manabe mistook a picture of Rando's school crush for a picture of how Rando looked before the accident. Rando awakens from a coma a full year later to find that he now has the face of Rina Kurimi, much to his dismay! He rushes out of the clinic in terror, only to run into Rina herself, who mistakes Rando for her twin sister that ran away years ago. Now living at Rina's house, Rando is now forced to play the part of Yuna Kurimi while at the same time searching for the real Yuna and attending school. Even with the help of Dr. Manabe, Rando has his work cut out for him!
Be it gender-swapping or forced crossdressing and protecting a secret from the masses that would ruin them, both Yamada and Pretty Face have more than that and ludicrous facial expressions at surprising reveals (For the characters at least) to bring them together. These school-based comedies also have their fair share of fanservice and a pair of dimwits for mains with their heart in the right place (Mostly) while sharing a stance of being generally hated and despised by the school population.
Akira Uehara is feminine and sensitive, while Nanako Momoi is violent, chaotic and manly; but he has a crush on her anyways. One day Uehara is sent to Momoi's house to bring her some missed homework, and thus his life changes forever. For Momoi's grandfather needs someone to test out on his new invention, and since Uehara has arrived, he decides to use him instead of Momoi! However, by accident, Momoi's grandfather activates the machine when both teens are still inside. No one is hurt, but there's one unfortunate side effect: they've switched bodies!
If body swap themed gender bender is your thing then Your & My Secret and Yamada-kun to 7-nin no Majo are what you are looking for. Somehow those two series are quite similar (although only Your & My Secret has the gender role reversal going on).
P.S. Keep in mind that Your & My Secret get's a bit confusing (and disturbing for some) with who is dating who...