I am looking for a manga that has romance and has elements of time traveling or changing the future or past. 😃 Thank you.

Orange (TAKANO Ichigo)
Again!!

[img]http://vdexproject.net/p/46696/partymini.png[/img]

do you mean you are looking for an specific manga or any manga about time travel

朝露の少女。

“The longer we live, the more weight we carry in our hearts.”

any manga 😃

Threads of Time One of the best I read dealing with romance and time travel

[img]http://img35.imageshack.us/img35/2318/akatsukigame1.gif[/img]

Little Jumper
Mahou no Iroha!

Maybe Tsubasa reservoir chronicle (is it considered as romance?)
Sorry for not hyperlink, this was from my ipod

Apollo no Uta - This may be old, but it's really good.
Steins;Gate - Anime is better though

Shinobi Life

Time Eliminator
dropped by scanlation group and with only 2 chapters not mich of romance. But who knows what might happen in the future, just wanted to suggest.

Sort of: Boku to Kanojo no Renai Mokuroku
Psyren
A bit of a spoiler: Mirai Nikki

Back to the Jack
Golden Days

[img]http://www.nodiatis.com/pub/13.jpg[/img]

DNA² has timetravel in it.

• I typed "rm -rf /*" and now my system won't boot!

Ruka to Ita Natsu
Also second Little Jumper

Sora wa Akai Kawa no Hotori has both romance and time travel if you don't mind it being quite old (and also quite long). I read it recently and really liked it, although I'm not really into shoujo.