why girls were never satiesfies no matter how boys tried?

Well i guess its natural for girls to expect more from us. And we usually fail to deliver much expectations. I believe thats where the conflict begins

I beg to disagree...if a girl is not satified with what a guy's offering, maybe there's something wrong. If a girl's inlove with a guy, however little the guy would give (material and emotional), it would be appreciated. I suggest your friend should have a talk with his gf to clear that notion. Goodluck! ;)

it depends on how you tried and how they value it. All you need is to be honest and be yourself. If they really love you, they will accept everything you give. You can also be more sensitive on what your love one need. They may need something else other than they say they want. The hint is, listen carefully... their body is speaking too... ;D

Well I don't think that is true. There are many girls that are satisfied with there bf's. Maybe in your friends situations they weren't ment to be together. Also you are only hearing one side of the story, maybe the girls felt that their men weren't satisfied with what they did and gave. A relationship goes two ways and there are always two sides to a story.

every relationship has its unique characteristic. besides it's your friend's. how about yours? don't tell me it's the same like his one.