There's not really any positive message to be found here, unless it's that love can be found in unexpected places. But that's secondary to the constant double-crossing, lying, stealing, cheating, betraying, and other iffy stuff.
Mostly cartoon-ish gunplay, but it sometimes gets a bit brutal. Lots of threats. One character tries to engineer situations in which an old woman will be killed; when the schemes go awry, her dogs pay the price. Some hitting/tackling and rough treatment of characters.
Simulated sex, with frequent allusions to sexual attraction and arousal. Lots of kissing and making out; in one scene, a male character is shown naked from the rear (he's also shown from the front, but there's a strategically placed object blocking his groin). Infidelity.
Language is strong and colorful ("f--k," "a--hole," "s--t," etc.) but not constant.
Limited casual drinking and smoking by adults.