Regardless of whether or not your end game is a serious relationship and/or marriage, NO ONE wants to meet “Married Guy/Girl” on the first date. It will appear as if whoever is standing next to you at the wedding ceremony is irrelevant, so long as you get to that point before you turn whatever age you’re creeping up on. A first date is about getting to know someone, enjoying the moment and opening up the door for a second date. There’s plenty of time to pick out baby names. A first date is not that time.
Talking only about yourself
We get it. Sometimes you’re nervous on a first date, and you want to talk about things you know. And what do you know better than yourself? Still, this is also the time to show how interested you are in the person you’re with. Ask them questions, let them ask you questions. Let it be a conversation with give and take. Basically: calm the fuck down.