What's so wrong with meeting a girl, falling in love with her and "be with her forever"? Isn't that what everybody wants? Well, not if you want to try out the market before you make your choice. Yeah, I get it. But wouldn't it be great to find "the one" at the first try?
So you might be afraid that if you get in a relationship you'll become so attached that you will hold that girl in your heart forever and never move on if things go wrong... dude, that sort of thing rarely happens. People fall in and out of love, and it hurts, but 99% of the time it's temporary - as you move away from that person and keep living your life, collecting experiences and meeting new people, time washes away even the fiercest passions.
Either way, I'd say go for it if you find someone that's worth it. No need to miss out on life because of fear. K?
Time to stop complaining when there is no reason to. Life's good, man.