one of my friend told me that he is quite bored after being with the same girlfriend for a long time as they are too familiar with each other....and he always wonder whether he could have gotten someone better....then i told him that since they are together for a long time, he shouldn't think like that....coz she was there for him all the times and why would he wanna get someone better...hmmm...anyway, i think those who are attached should cherish each other and not make comparisons on whether they can get someone better.....