<human>: Provide a brief overview of the text.

Hi guys!
I've been with my boyfriend in a semi-long distance (we live four hours from each other) for the last three years, and I am very happy with him, but starting to get a bit anxious about it.

I know it sounds maybe premature but we honestly are so good together, and there's very little doubt in my mind that anything could go so wrong that we wouldn't spend the rest of our lives together. We are ultra compatible and on the same wavelength.

But this is starting to really scare me. I don't want to break up with him, but I'm young and I've never really had the chance to do crazy independent things, and I want that chance before I dedicate the rest of my life to someone. I want to be able to spend all my money on a spontaneous holiday rather than worrying about having enough to get the train to see him etc. I'm just concerned that we're so good for each other I'm kind of in it for the long run unless we break up?

It's like I wish we hadn't met when I was 18, but instead in a few years time when I've had my early 20s to myself and then can be with him completely with no niggle that I may have missed out. But I know I can't do that, and if I leave him now then I can't just get him back. I'm confused, any advice would be hugely appreciated.
<bot>: Very happy with my boyfriend and want to stay with him basically forever, but also want to have the 'single life' experience before I settle down. Torn on what to do.