I used for 3 years. It does significantly increase impulsivity & libido, but my experience was not that it was like I was out of my mind, I was always fully aware of the choices I was making, I just didn't care so much under the influence. Later I may have regretted it but it felt too good at the time to stop. It's incredibly selfish behaviour. I would suggest if it toutures you, as it did me as my partner had similar behaviours to me, to leave for your own sake. If it's something you are able to cope with without it tearing you up maybe stick around & make sure he is doing everything in his power to better himself. Don't let it affect how you see & value yourself. This is entirely his problem.