it's funny that you posted this because i just recently quit lexapro for similar reasons ('cept i'm a girl) and today my pdoc mentioned wellbutrin as an alternative. she said it has no sexual sides. it works on the dopamine receptors, as opposed to the serotonin... not sure how this effects libido though... and i'm not particularly keen on finding out as i'm pretty happy with my benzos and beta-blockers. it might be an option for you, lee, if you also need an anti-depressant.
dx: bipolar ii, panic disorder, PMDD, SA
rx: mirtazapine 30mg, lamotrigine 200mg, levonorgestrel 150µg, clonazepam prn, propranolol prn.