› firstname.lastname@example.org 
I've been dating a beautiful girl, and I mean she is hot. The problem? She's really jealous and we fight all the time. I can't look at another girl. She is incredibly possessive and wants to be involved in every element of my life.
I've never had any sort of sexual problems before, but I'm having problems orgasming. We have sex all the time. It's never boring; she has an amazing body and is a great lay. But I just don't come. I have no problems coming on my own. Can my mental frustration lead to physical problems in bed?
Feel Free to Come Up with a Clever Acronym
I don't do those; that's the other guy.
I keep reading and rereading and I have yet to find the part of your letter where you say you love, like, or are in any way interested in this girl beyond the purely physical, and that stuff's not going so well. This lack of any genuine affection makes the solution to your problem pretty simple: Get the hell out and date someone you like next time.
If you were actually planning a future with Miss Hot Thing, I'd be expressing concern about the extreme possessiveness and warning you that little good ever comes of a relationship based on the desire to control and possess, rather than enjoy, the object of one's alleged affection. You probably know this already, but how hard someone latches on to you and how much control that person wishes to exert over every aspect of your life is not a measure of affection, not by a long shot. At best, it's about her, not you, and it could and will be easily transferred to the next object of obsession. At worst, well, does the term "bunny boiler" mean anything to you?
Frustration can indeed lead to performance issues, as can just plain not liking the person you're attempting to perform with. Face it, she drives you crazy, and not in a good way. Your body has noticed this and is refusing to cooperate any longer. Your brain, or what passes for one, is still convinced that a girl who’s "hot" and "beautiful," "has an amazing bod," and is “a great lay" ought to be enough. Your other head, on the other hand, has proved itself the smarter for once. I suggest you listen to it.
I'm a virgin, though I recently became involved in my most sexual relationship ever. I think we're nearly ready to have sex, but I'm concerned about not having an orgasm. I hadn't experienced much penetration before, but now I get a lot. Still no orgasm. I don't get very far on my own, but when he's using his tongue or fingers, I occasionally feel close but never experience a release. Is this normal? Does it suggest that I'll have similar difficulty when it's his penis instead of a tongue or finger? Or will the difference in size make me more likely to orgasm?
I take an antidepressant but I've been on it years longer than I've been sexually active, so it's hard to tell if that's the problem. I'm working on lowering the dose slightly, but stopping isn't an option right now.
Please Release Me
Are we having That Clinton Problem? You say you're about ready to have sex, but you've already had his tongue and fingers and who knows what else all up in your business, which sure sounds like sex to me. It would also be useful to know where exactly he's sticking those things. My guess is, nowhere useful.
There comes a time in every woman's life where she must use the power of the Internet to access a nice vulva diagram. I found an alarmingly colorful but rather nice one at www.vaginaverite.com/diagram1.html , but there are plenty more where that came from. See how there's nothing inside the vagina, but there are plenty of external structures that look worthy of attention in their own right? The clitoris and related bits in particular? Direct his (or your own) attention there for a change and stop worrying about penetration until you've gotten what you're looking for. Although some women are capable of a purely internal orgasm and far more enjoy penetration, if you were going to find your bliss poking about in there, you probably would have already.
As for the drugs, they may indeed be inhibiting you. Many people find that the effect wears off over time, but you've had time and it still isn't working. I suggest trying the clitoral route (your fingers, a vibrator, a shower massage, his fingers, his tongue ... you get the picture) while also putting your doctor on notice that you may need to lower or change your medication soon. Perhaps remind him or her that never ever having an orgasm is a depressant in its own right.
Andrea Nemerson has spent the last 14 years as a sex educator and an instructor of sex educators. She rarely has That Clinton Problem. Visit www.altsexcolumn.com  to view her archived columns.