Don't do things that make you uncomfortable or go against your nature (especially if you want it to work-out in the long-run).

Choosing your battles and accepting your partner as they are...you fell in love with this person, don't try to change them.

ask how their day was, and wish them a good day.

Remember that you don't need to know every single detail of your SO's entire existence in order to be happy. There are some minor things you'd be happier not knowing.

Don't talk about past partners.

Do try to have a nice dinner at home.

Don't lie and sneak out to drink when you said you wouldn't.

Spend time with, care about, and listen to your partner

Have fun and try new things together ;)

Do listen to what the other person has to say and give them a chance to speak