Responses
http://www.mangago.me/read-manga/kimi_ga_uso_o_tsuita/
http://www.mangago.me/read-manga/sabaku_no_harem/ (completed but mangago doesn't have all the chapiters)
http://www.mangago.me/read-manga/cherry_boy_that_girl/
(ditto)

Can someone recommend me any straight romance mangas that are completed? Ones that you can’t forget till this day or with a well paced relationship and good plot. Preferably a little in the 15+ chapter side. And it can be of any genre. Thank you (: