John Ringo's "Ghost". To start off, we are introduced to the main character, Mike, who is walking around UGA and thinking nasty thoughts about how he could kidnap coeds (and what he would do to said coeds when he'd kidnapped them). This is okay though, because it's been some time since he's gotten lucky with a woman. Then he sees a coed actually get kidnapped, and he goes off to chase the kidnappers down, and somehow this leads to him finding a kidnapping ring, and stowing away on a plane to try and rescue the kidnapped coeds. The very convoluted story then continues with him ending up in the Middle East, where we are treated to lots of lovely stereotyping regarding Muslims and Arabs. Moving forward, Mike finds the kidnapped girls have been kidnapped specifically so they can be tortured to death on live TV as some kind of weird punishment against the Great Satan America. Of course, Mike rescues the girls (with some really disgusting thoughts regarding how much he enjoys watching the torture), all the girls fall a little bit in love with him due to his misogynistic attitude and conservative mindset, and a few even seek him out a few years later for a "thanks for saving my life and showing me the right way to be" talk.
It's the first book in the "Paladin of Shadows" series, and the series just goes down from there. Mike acquires a harem; he doesn't want one, but it has to work out that way, so might as well enjoy it! Then he acquires a harem mistress. Then he starts exercising the droit du seigneur on the people whose land he now owns, on the pretext that he can give the brides a dowry and help make the people more prosperous! It's just all too much.