Some I have read and recommend:
http://www.mangago.me/read-manga/natsume_kun_wa_nan_demo_shitteru/
http://www.mangago.me/read-manga/despicable/
http://www.mangago.me/read-manga/nani_ka_ii_no_mitsuketa/
http://www.mangago.me/read-manga/ichiban_chikaku_de_koi_o_suru/
Some more:
http://www.mangago.me/tag/Obsessive+Seme/
Following
Most of Madarame Hiro's mangas are like that. I suggest you start with Kawaii Akuma. If you liked it you can work your way through the whole series haha
http://www.mangago.me/read-manga/ouji_no_hakoniwa/
http://www.mangago.me/read-manga/moritat/
http://www.mangago.me/read-manga/sasayaku_no_wa_sono_yubi/
http://www.mangago.me/read-manga/fuson_na_hana_o_aisureba/
http://www.mangago.me/read-manga/sakaku_opera/
http://www.mangago.me/read-manga/bleach_dj_roulinsou/
well, if you are alright with obsessive to the point of creepy and murderous then start at this page. http://www.mangago.me/home/mangalist/69274/?filter=&page=5
Following
Following
MINNNA-SAN arigatouuu(≧∀≦)
Not sure if someones already added, but this one http://www.mangago.me/read-manga/color_recipe/
Yaoi where the seme is obssesed/crazy in love towards the uke