I’ve been thinking about marriage a lot lately. That’s partly because I’m approaching 30 and it feels like it's pretty much required to be at leastthinking about marriage if you’re not already married with babies as you get into your late twenties. (Oh hey there, cultural expectations and biological clock!) It’s also because my boyfriend and I have been together long enough that friends and family feel like it’s fine to pester us about our future plans, which is… whatever. So yeah, I’ve been thinking a lot about marriage and one thing that keeps coming up is that maybe marriage doesn’t have to be the lifelong, monogamous commitment that I’ve always thought it should be.