i dont know how to break up with my gf?

i feel really bad for posting this here on yahoo answers..

but im not sure what else to do.

there are some pretty "serious" circumstances with this relationship, they go wayyy back into the end of middle school..

alrightt so ill start telling this little story i call my relationship.

i met her in 8th grade after moving to virginia from florida, we were both two very different people compared to the people at our school here in va. shes a navy brat thats lived in a bunch of diff places. We hit it off instantly and did things in school to piss our teachers off, lit hot glue sticks on fire and glue desks together.. a bunch of things middle school punks would do. so we were friends until the beginning of 9th grade then we started dating. i broke up with her after 6 months of dating on april fools day D: yeah i know its kinda messed up.

we didnt talk for 3 years, i moved to a different part of the city and went to a different school. i changed a lot in her and my opiinion. im clearly not the same person. but she is. maybe a little bit older, but for the most part hasnt grown up too much.

Im 19 now and we've been dating again for a little over 6 months.

This is my dilemma.

-- she is madly in love with me now, and tells me she wants to be with me forever occasionaly and really likes spending time with me. im cool with that. i lost my v card to her, she lost hers before me. I want to be with other women though, i see girls at the bookstore and just anywhere and they look interesting and id really like to get to know someone else. i really do value our relationship and i do love her. but i dont think i want to be with her forever, its just something i cant picture myself doing. my life isn't exactly going in the direction i want it to go right now, but im working with my dad a lot and i am gonna start saving up to move away maybe a year from now. i dont know where i want to go, but i dont want to live here in the u.s anymore. i want to travel a little bit and find a place to chill out for a while and meet different women from all different cultures. women are very interesting to me and i just love them. IM 19 YEARS OLD! i dont think i should be tied down to one girl. i should get out there and be meeting women even if its just as friends. i am cool with that. i just miss having friends that are girls..

So i know, the obvious thing for an answerer to say would be; well break up with her.. its not that easy. ive tried breaking up with her and i instantly feel really bad, i change my mind while breaking up with her and i tell her i dont actually want to. its happened twice in the past month. i feel really horrible about it and ive kinda been treating her like sh*t lately..

so what should i do guys and girls?

its so hard!!!!