one thing i would say about any relationship is that if you wat long term success honesty is the most important factor. and fighting isnt always a bad thing. so long as your only fighting to air your greivances, and only if your greivances are rooted in a real problem, then nfighting can be a very good and productive thing for a relationship. just never resort to criticism of the persons character, contempt, defensiveness, or shutting yourself off from the other person. any of those four things are disaterous for a relationship. one other thing i would personally note is honesty about your sexual attraction towards other people. i notice that most couples are extremely secretive about this FACT, how many of you married men have ever heard your wife talk about a guy that she saw who she thought was sexy? how many of you have told your wife about a woman you saw that you wanted to fuck?? just because people get in a reltionship or get married doesnt stop them from being sexually attracted to other people, but most couples act is if thats the case.. often times leavign them both suyspicious of the others real sexual desire, and themselves sexualy frustrated with their lack of ability to express their own desires too. talk with your spouse/partner about your desires, and listen to theirs. it will make both your lives happier.
