That voice is your illness talking: I have ruined so many relationships by listening to it that I don't date any more - and haven't for years. Depression is a bastard for making you believe things that aren't true.
I put my tablets by my bed (I have a cute little box they all live in) and take them when I get into bed at night: a routine helps (though mine have a bit of a short half life or whatever it's called, and if I forget for whatever reason, I know about it by the following day!). When it comes to filling prescriptions - can you get your repeats transferred to wherever you do your food shopping, if there's a chemist there? Or to a place that's really close to work? Making it easy to pick up makes it a lot harder to forget, I've found - I feel bad, because I moved mine from an independent pharmacy to Asda, but it makes it much less stressful to collect, as I don't have to do it between 9 and 5 Monday to Friday etc
Also - this is something I have never managed, BUT - there's a school of thought that says you ought to avoid drinking whilst taking ADs: I've never been clear why, but it might be worth considering, if you are finding that it's a problem. I'm not a big drinker - perhaps once every four to six weeks - but even so, I feel like I have little enough pleasures as it is: but I know people who are religious about not doing so and do seem all the better for it. Despite this, I doubt you behaved like an idiot - when you're crushingly lousy, you always think you've been worse than you have, and probably, no-one even noticed: they probably thought you were the life and soul! But have you thought about asking your GP to be referred for counselling at all? It might be helpful for quieting that lying voice.
Hang in there, anyway: it's not your fault, and you're not alone 