Came here for the first time in months (years?)
First off, this thread is useless without pictures.
Second of all, isn't it only a harem if you actually have any chance with the girls?
Thirdly, living with a hot girl as well as a girlfriend can cause some annoying jealousy issues (Girl A walks past in a towel, girlfriend asks if you were checking her out etc) situation probably more frequent than you'd think, as Girl A will do it on purpose for the attention.
Fourthly, pretty girls are usually annoying. I can just about put up with my lady, though more than one I could not. And as they're friends, you can't just tell them to fuck off and stop being dappy.
Fifthly, welcome to the world of being told about pathetic relationship shinanigens, and having your sage advice thoroughly ignored.
Sixthly, has your lady expressed any interest in group sex?
Seventhly, toilet queues suck. Electricity bills suck (hair driers, blah blah)
Eighthly, is this the girlfriend you had ages ago? The one that IIRC came into agent once or twice?
Ninethly, is this a result of your Pick Up Artist TM skills?
Tenthly, some girls don't like being noisy around their friends, which can impact the intensity of fun-time.
[been there, done that, if you couldn't tell

]
Also, a little hello to some familiar faces, AceHigh, Josh, Dale...
And to jump onto Dale's expensive female dating regimes - You have to speculate to accumulate - women are in it for the long haul

Well, I suppose that covers me for posts here for the next two years....