Who is Paying?
This is the 21st century, and guys, you don't need to pay the whole bill, but it's definitely not attractive if you don't even offer to split the check! Also, don't ever forget to bring your wallet. That's a really bad excuse.
Checking Your Cellphone
This is our first date. Your attention should be on me. Not on your phone. Actually, this is a pet peeve of mine in general. Even when I am just with my friends at dinner, it annoys me to the millionth power when we make all this effort to have dinner plans and all my friends spend doing during dinner is checking their phones!