I came across reading this article from somewhere, in which i find it rather meaningful and which applies to every relationships too... perhaps you would wanna look it upon your own...

After getting a boyfriend, life suddenly seems so beautiful and all your troubles and worries take a temporary backseat. You are completely crazy over him and think that you have found the best boy/guy in the world. At this stage ,you are so happy with your boyfriend that everything else does not matter. His faults, if any will be oblivious to you and any imperfection about the relationship is conveniently brushed aside without much thought. Even if you are aware of his shortcomings, you will tend to dismiss them as insignificant. In your eyes, he is flawless and both of you are in a wonderfully perfect relationship.
However, as time passes by, your relationship may gradually lose its sparkle and fall into a dangerous trap, the 2Cs...

1st C: Complaining
Although it maybe human nature to complain, you must be careful not to let this behaviour ruffle your relationship. Now, take a step back and think about whether you have been complaining too much to your boyfriend. Do you complain that he is always late when meeting you? Or he doesn't give you enough time for physical intimacy which is what you really need? The list of complaints will vary with each couple, but you may be surprised that the list can turn out to be really quite long for some.
The primary problem with complaining is that it doesn't work to your intended effect most of the time. On the contrary, it may even agitate your boyfriend if you keep harping at her on the same issues. With time, he may just brush your complaints aside and think of you as a person who"only knows how to complain". One thing you can be sure is that either generally don't like whiny partners.
Solution to 1st C
The Secret lies in the way you phrase your words.
it's important to avoid the use of generalisations, and instead of complaining, try rewording your message into a form that does 2 things:
1. Focus on the solution
2. Appeal to his senses

2nd C: Comparing
Like complaining, it is human nature to compare what we have to what other people have, and start feeling dissatisfied or even jealous. Well, comparing yourselfs with other dissatisfaction to motivate yourself to strive towards greater height. However, comparing your boyfriend with other boy/guys can be detrimental to the health of your relationship.

Have you ever found yourself comparing your boyfriend with other boy/guys and wishing he would be better in certain ways? Like," How i wish my boyfriend can be as understanding as my ex-." Or perhaps,"How I wish my boyfriend is as sexy as Takeshi." The Fact is, nobody is perfect. You're not perfect either. You can easily find a trait your boyfriend lacks that another boy/guy you know has. But if you're always comparing him with others, then the end result is that you'll always be dissatisfied with every relationship you commit yourself to, and may end up suffering the agony of going through one broken relationship after another.

Worse still, if your boyfriend knows you're comparing him with other boys/guys, he will probably be hurt and start wondering if your love for him is deminishing.He may also lose confidence in himself and start worrying you may leave him for another boy/guy. Just ask yourself, do you want him to always compare you with other boys/guys and tell you you're lacking this and short of that?

Solution to 2nd C:
yes you can compare, but only in this 2 situations whereby comparing is actually beneficial:

1. Comparing at the friendship stage
The best time to compare is right at the beginning when you're still at the friendship stage. That's the time that you should compare him with other boys/guys to decide if he is the one for you. After you commit yourself to a relationship with your dream partner, however, that's the time where you should stop comparing. After all, you chose him because he is the one with all the attractive qualities that made you fall in love with him.

2.Comparing constructively
Although every couple is unique, comparing your relationship with that of others can sometimes help to improve your own love life. For Ex. if you think your dates with your boyfriend are getting quite mundane, why not talk to your other couple friends who may have lots of hot tips on how to spice up your dates? Who knows, you may be able to use some of these ideas to inject passion into your own dating life. The key word here is constructive comparison, meaning you only compare if you think it can benefit your own relationship.