<human>: I [20M] have been seeing my girlfriend [22F] for about a year and a half and we've been seriously dating for a little over a year. We've been long distance for 6 months now, seeing each other every month or two, but we will not be able to see each other for at least 6 months (I don't want to give away too many details because she's also on reddit).   
I love her more than anything I ever have, and the thought of breaking up, when we both don't want to, tears my heart to shreds but I don't think I can keep up this ldr. I am deeply unhappy. Skype is nice but does nothing for physical intimacy. Is it worth sticking it out, knowing that in 6 months I'm in for at least another year of long distance? Is it heartless and lustful to end things with someone I love because we can't be together? Is an open relationship something that can help, or will it only compound the problem?   
I'd love to hear perspectives from both men and women who've been in similar situations.

Condense the text into a few key points
<bot>: I love someone that I can't be with physically and its making me miserable, but I don't want to break up because it feels like there's no reason to, we're so happy when were together.