I know a manga though I don't know if they made it yet. It's from the same creator of love hina. A.I. Artifical Intelligence.
imho the love hina manga is much much much better than the anime series. they left out so many things in the anime..
Love Hina is great, and ye the in most cases the manga vers are a lot better than its anime counterparts. have you heard of video girl ai? there's a six ep ova, plus the manga is also great. another great manga from the same creator of video girl ai is I"s.
it really depends on what part you like about love hina, for me i love everything about it. love hina being my favorite anime, ive tried to find something to out-do this anime. but i havnt found anything close. ichigo 100% (comes close, but not close enough, this anime is great, its short and still airing, but the storyline is similar in a way, but the characters are all love-able) shuffle (more fantasy based, kinda revolves around the same story line, but not that good overall)
other animes made by ken akamatsu... mahou sensei negima ...which is quite good imo although i havent been able to keep up with the downloads...>< AI Love you...or sumfin...saw a friend reading the manga once...the main character looks like naru wif blonde hair ~__~ dunno about that one but chek it out if you want but ichigo 100% is an anime very much like love hina and it was mentioned above... the anime apparently was crap...but i read the manga and dayam...it was pretty good but i still love the love hina manga the best!! its the bomb!!!