[gargamel]

Insecurity/security is a huge part of the reason people get married. Other than the religious aspect of it, it basically boils down to two people getting each other to make a legally binding promise to never leave. That's all about security, so I wouldn't read too much into that comment from your friends. If they're not happy, though, that's a major problem that will be much cheaper and easier to deal with now rather than later.