Happy Fourth of July, everyone!

Please enjoy these midsummer treats from BreakupGirl.net. Just please — says Breakup Mom — wear a hat. Unless you’re Paul.

• Breakup Girl’s Magic Beach Ball!
• BG’s advice on summer love
• New tricks for the dog days: hot summer dates
• BBQ how-to
• BG’s European Vacation
• Independence Day! All about moving on / being sunnily single
• Watermelon.

If you’re looking for fireworks in your backyard and your bedroom this Fourth of July, perhaps you should eat an extra slice (or ten) of watermelon. According to a new study, the phyto-nutrients found in watermelon include lycopene, beta carotene — and the “lovely” citrulline, proven to have a calming, Viagra-esque effect on blood vessels. Inconveniently, citrulline is most prevalent in the rind, so be careful not to hurt your teeth.

“We’ve always known that watermelon is good for you, but the list of its very important healthful benefits grows longer with each study,” said Dr. Bhimu Patil, a scientist involved with the study. Did he just say “grows longer?”

In a society where even the most outgoing of girls succumb to insecurity by their teenage years, it’s difficult to find young female models of confidence and integrity in our popular culture. The New York Times recently explained this struggle best: “Who are you supposed to be, or to avoid becoming? A nerd? A ditz? A flirt? A tomboy? What kind of role models are those make-believe princesses, those Bratz and Barbies, to say nothing of the real-life Britneys, Lindsays and Mileys? Mean Girls, Gossip Girls, Girls Gone Wild, Girl Power, You go, girl! What’s a girl to do?”

It turns out girls need look no further than the silver screen for their answer. In the midst of a summer dominated by hulking male superhero flicks, the American Girl global-domination industrial complex franchise has released their first feature film, “Kit Kittredge.” (more…)

Adultery lurks everywhere, among celeb couples and political leaders, our neighbors and even, on a bad day, our own relationships. New York Magazine, following up on the Spitzer scandal in its own back yard, recently weighed in on the matter, with a lot to say about American culture and the perhaps untenable emphasis we put on monogamy.

According to writer Susan Squire, marriage wasn’t made to handle all this pressure in the first place. The average life span is far greater now than it was 100 years ago, and back in those days, marriage was a more formal institution for breeding and family purposes only. It’s becoming more and more difficult for partners in a marriage to get the variety and sexual attention that they need. The American burden is the ideal that marriage should provide romantic love forever. “Marriage involves routine, and routine kills passion,” Squire says. Sometimes partners see an affair as the only way out of that rut.

That’s why Mira Kirshenbaum, clinical director of the Chestnut Hill Institute in Boston, suggests that not all cheaters are evil trolls. (more…)

The New York Daily News, our fair city’s runner-up for best morning-after headlines, recently reported that women are not enjoying one-night stands as much as men. According to a survey published in the journal Human Nature, 58% of women said they would not have a casual encounter again, compared to only 23% of men who felt the same. The study found that women still tend to feel “used” after a one-night stand, and that in such brief encounters, often feel let down by sex that’s “not as satisfying as they’d hoped for.” Men, for their part, tended to regret their choice of partners, lamenting that the women “weren’t as attractive in the morning as they’d seemed the night before.”

Over here at BG.net, we’re not sure either how much we’d respect the ultimate conclusions of this study in the morning. Because maybe it’s not so much that “women have not adapted to casual sex” (Urr?) but that society’s double standards (still!) have not adapted to women having casual sex. Check out Feministing’s response for more.

Here, your weekly installment of Ask Lynn, BG’s alter ego’s column at MSN.com (powered by Match.com). This week, we meet “Very Puzzled,” who asks Lynn to resolve yet another age-old question: “Who pays for the date?” VP, it should be noted, is new at this … again. A single 40-year-old woman, she’s been in school and out of the pool for a while. Now that she’s back, she writes, “I find that most men I have met expect ‘Dutch treat’… . When did the world change so much? Am I just meeting stingy guys, or is it now the right etiquette for me to expect to pay my own way even if asked out? Am I just too old-fashioned to date?”

Far as Lynn is concerned, the central who-pays question can be answered in three little words. (But, of course, she adds a few more.) Check out the whole Q&A, and then come back here to leave your own tips. (I mean, if your date paid the bill, you should at least offer.)