family love is also with the notion of love and care about your family members more then yourself. I think parents love their children for not only by given their life but protect then, treat them better then anything else in the world. And the important thing is, family love usually doesn't require repay. of course romantic love works in this way sometimes, but not as usual as family love. In Chinese culture, we care about filial respect and repay for parents or elders. But personally, I have problem to understand the love between brothers and sisters because the one child policy in China when I was born. I grown up with no sisters and brothers but my pet. But I do have a cousin who is three years older then me, we grew up together and live near by. The issues is we used to have "brothers and sisters" in class when I was in middle school and high school. That's very unique, a relationship like family and could goes beyond than friendship and romantic love.
I'm not sure about the romantic love, but the family love is basically as same as the widespread notion. Parents and elders take care of one when their were young, and after people getting old, they should repay to their families to show the filial respect. In Chinese, we call it "孝顺"(shiao shun, filial respect/filial piety/obedient). we have an old Chinese saying "百善孝为先"(filial comes the first out of hundreds of good morals). I guess the traditional Chinese way of family love are based on morals. Actually we rarely say "I love you" to our parents. I should say almost none of them saying that in my grand parents generation; maybe 5% in my parents generation; maybe 50% in my generation(only in urban family. I doubt rural family do that). To express our love to parents, most Chinese will show their love by actions(help parents, buy their presents, spend time with them). Maybe it easier to write "I love you" on sms or a card then actually say that to parents. The same thing happens from parents to child. Well, my family prefer to write "love" than say. My dad sets "we love you forever" to me as a welcome phrase when I get online to chatting program. But they hardly SAY that =)
Romantic love is another issue. Young Chinese say that everyday. Like my cousin and her boyfriend calling each others everyday and say "I love you", write that on their updates etc. But that happens mostly after they established their relationship. Before that, usually the male should be more active than female, then that present how reserve and valuable they are(hahaha... that's not working with me). I was not like that most of the time. I would rather shout it out. I don't like implication and reserve.
Personally, I don't know if it is because of the kindness from Chinese Confucianism or I get influenced by my grandpa who is a Buddhist. To me, love is all about giving and sharing(only the happiness). But part of my mind which being influenced by western culture encourages me to say that out. My idea of romantic love maybe too idealized. Usually goes like either scare guys away or attract/interest then since it hardly see a girl express her feeling like this.
I would take some examples to explain that. We have a folk story about a goddess in love with an ordinary human, the goddess was actually become a normal woman and married with the guy. But goddess father gets augury and serape them with galaxy. They try to fight for their love but not succeed. So they are stay at two sides of galaxy, the goddess is Vega and her husband is Aquilae. That is the story of constellations in China. All Chinese(in Japan as well) will celebrate the 7th of July in lunar calendar, because that is the day they could meet on the bridge built up by magpies. The story passed on for thousands years and been adopted thousands of times on media. So in Chinese culture, I think there are some important points in a great romantic love:
1. there should be problems between couples; 2. they have to fight for love; 3. 80%great love stories with a sad ending, or they become something else as a metaphor that says their love goes beyond. Same thing in movies like Hero(2002, Zhang YiMou), Crouching Tiger, Hidden Dragon(2000, Ang Lee. the moive adopted from a novel in 30s'). Even girls play a passive role in Chinese way of romantic love, usually girls are brave and fight side by side for their love with guys in the love stories that being widely circulated.