hi, mtex,
i've never heard of depression meds changing one's sexual orientation. depression meds do affect sexual performance though, usually making arousal more difficult and decreasing sensation in men. they also decrease sexual drive. so, it's not surprising that you feel less attraction to men - your libido seems to have decreased. it also seems that you are acknowledging / realizing your feelings for women. as meds are involved, i suggest you speak with the MD/therapist who prescribed the depression meds of your change in sexual attraction/feelings and ask if your medication dose is too high. Good luck!