How should I approach the topic...

I have known my SO for 10 yrs and we've been dating going on 5 yrs and have a 4 yr old daughter.

We have discussed marriage couple yrs ago (Feb.2013) and then again recently after our friend of ours got married (April 2016).

Fast forward to today (May 2016). Our daughter wakes up and goes mommy are tou married to daddy yet. Mind you this is not her first time say this. She been saying this atleast every other month. But today kinda hit me hard. Like why haven't we got married yet. We've discussed it.

Now ladies how do I approach this topic with him. Would I just be blunt and come right out and say, "Our daughter keeps asking me I am married to you. I think we should just go get married."