<human>: Every now and again I start to feel down about my relationship and I begin to think that my girlfriend and I don't really have any future together. I mean, we could. We make each other happy, she looks after me, she is essentially a great girlfriend. But I look to the future and I see nothing. I can't actually imagine having a family with her, buying a house together, etc. In past, shorter relationships (this has been my longest one), I used to imagine things like waking up next to my partner when I'm older, getting ready for work together, feeding the kids etc. But now I don't feel any of that. It just doesn't come across my mind at all.

It's just that she is so good to me, and I appreciate everything she does for me, and she is a really good influence on my life. Just every maybe 6 months or so I start to doubt our relationship and it really takes a toll on me. I'm going through it now, and I have all these thoughts going through my head like "we have a trip to NZ planned for the end of the year" and "we are planning to move in together at the end of the year" and I don't want it to get to that point and things to turn sour.

What drives me nuts is that I know I'll get over this down feeling in a week or two, but the thing I've realised this time around is the fact remains that I probably wont have the life I want in the future with her. It's just that I get so confused because she really is a good girlfriend, but I just don't know if she is the one. Honestly, I would like the chance to meet new women and spend time with them. I always think that I'm young and that I should explore and shit like that. But if I ended this, I wouldn't know if I'm making the right decision or not...

Give me the gist of the text in a nutshell
<bot>: Girlfriend is great, but I don't know if we have a future together, don't know how to think.