 
																				Lovely Complex. It's about height difference.
 
																				
                                                I am currently reading this
 http://www.mangago.zone/read-manga/kurosaki_kun_no_iinari_ni_nante_naranai/
But you could also try:
 http://www.mangago.zone/read-manga/kaichou_wa_maid_sama/
 http://www.mangago.zone/read-manga/say_i_love_you/ (But this one the doesn't really fit the theme except at the start In my opinion)
 http://www.mangago.zone/read-manga/ookami_shoujo_to_kuro_ouji/ ( now this one in my opinion fits the love/hate relationship really well)                                            

 
		

Does anyone know straight mangas with love/hate relationships, where a girl firstly despises and humiliates a guy and then comes to love him? ( she could be rich and he poor etc.)