To marry or not to marry?

Well, I'm thinking about it.
Me and my boyfriend live together, so, in my conception we are married.
But, usually, I don't know what to say when people ask about what we are.
Sometimes I say that he is my boyfriend, sometimes I say that he is my husband. And my boyfriend ask me to think about it, and I always say that we are married already.
And, we are planning a trip to Paris, and It'll be like a honeymoon, but to have a honeymoon you need to get married first.
But I won't see me signing a paper  or saying yes in a church.
I woul'd like to know what to do, and know what is better for us!