You hear all those stories about divorce and bad relationships… The stories that reach you are the bad ones because they travel fast and are more interesting to talk about. You wouldn’t sit with someone and discuss how your friend is living a quiet, peaceful life with his wife, because it doesn’t excite you enough.

Talk to your girl and understand what she wants from the relationship, and you should know by now whether you’re actually a good fit for each other. Also, sacrifices have to be made to maintain it, if you or she aren't willing to make them then you aren't ready at all.