Here's what you shouldn't do on a first date
Starting a new relationship is exciting and beautiful, and we want everything to be perfect to the "t." If you like this person and want things to work out, be on your best behavior. While you be nice to them and all, be mindful to not do the following. But if this is a forced date, do them all to get out!
Try to be on time, or a few minutes early on your date. Not only is it good manners, but also it'll give you more time to spend together. Getting stuck in traffic is one thing, but being an hour late is a whole different story. If you are going to be late, inform them about it, so that they don't have to wait.
Speech is very important when it comes to first dates. Being polite and kind isn't a tough job. Cuss words can be offensive and rude. Not everyone is a part of your friend circle and they might not appreciate your language and derogatory remarks about another person in the name of fun. Profanity is never a tool to impress.
Let's say this will make them feel weird and on the edge. If you are meeting someone new and want to be with them, chuck your ex out of your mind, at least during the time of your date. It might also make people think that you are simply using them as a rebound. And surely there won't be a follow-up date after that.
If you are busy, inform your date about your busy life. If you are expecting too many work calls, adjust the timing or date of your meet-up. However, checking your phone, attending call after call, conversing with someone over the phone, or scrolling through social media simply projects that you aren't interested in the person. It also reflects shallowness in you.
Until you are really close to someone, and until anyone seeks your advice on a matter, don't go around advising them on life, career, or whatever other important matter. Nobody asked for it. It can be insulting and quite annoying to receive uncalled-for advice or suggestions. Wait till they ask you. Unsolicited advice might even feel critical instead of helpful to the listener.