Hi and welcome. I'm new myself (coming to a close on day 4) and am in a similar situation. I've been dating someone for close to a year and lets just say my very blackout drunk belligerent public dramatic Olympics this past weekend and the thought of losing him is part of why I've made the decision to get sober (for myself is the first reason cause I don't really like publicly embarrassing myself and feeling terrible all the time). but at the end of the day he is also a heavy drinker...not a crazy public embarrassment like I am but a heavy drinker none the less.... and as I progress only time will tell if we will stay together or not. I think what is best is to do what is healthiest and best for you.