5. Speak Up If Something Bothers You
Early on in the relationship a nuisance or an annoyance might not seem like a big deal, but spend enough time with them and it can add up into being a deal breaker.

That and if you tell them something bothers you right away, it can be said without much emotion or heat. But if you bottle it up for weeks or months, by the time you finally share your feelings it can burst out and turn into a fight. So do yourself a favor and speak up if something bothers you - whether that's something they said or something they do. You will be happier for it.