I need to get a bit of perspective on this and don't really want to talk to friends IRL. AIBU to end the relationship because he has started smoking.
To put this in context, I hate smoking. My partner knows this and knows it was grounds for me ending things from day 1. When we met he smoked but quit as soon as he met me 5 years ago and life has been fine.
I found cigarettes recently and when I confronted him he admitted he had been smoking for months and it was due to stress about our lack of sex life. I have no sex drive at the moment and can't even bring myself to go through the motions . I think it is a mixture of stress, have never had a particularly high sex drive and the pill I am on (cerazette). He has agreed to go to GP to try to get prescribed champix to stop smoking. I stopped taking the pill yesterday and will wait and see if that has any effect on my libido.
Despite this I am in 2 minds about whether to put him out. He is perfect in every other way but I feel really betrayed that I have been lied to for months - every argument we have ever had has related to him lying to me. He has known that it is a deal breaker for me and I don't know even if we do stay together if I can ever trust him again.
I know it seems really trivial but it is very important to me but AIBU. Please help me get a bit of perspective.