To my knowledge he has called in "sick" to work on a Monday three times within the past year because he's had too much to drink over the weekend.
He did come to visit me a couple of months ago for two weeks. During the time that he was here he drank a twelve-pack a day. He woke up wanting a drink.
He said he was just enjoying his holiday, but since he's been back in the UK he's drinking more and more on the weekends. I don't think he drinks during the week.
I feel like such a horrible person for feeling the way that I do about this. I don't want to appear judgemental or anything of the sort. I just don't want to make a huge mistake. I am concerned that this has become an unhealthy relationship for him. He says that he drinks so much because he's unhappy and he can't be happy until we are together. This also scares me because in my former marriage I was responsible for my husband's happiness and that is too much responsibility for a person to shoulder.
The amount he's drinking is not normal. Even if he does drink like that "only on the weekends," it is a form of binge drinking and not normal.
If he's had to call in "sick" to work due to drinking, this is not normal, and indicative of a drinking problem. Drink is interfering with his life in that respect.
"He says that he drinks so much because he's unhappy and he can't be happy until we are together." It sounds like he drank plenty when you were together during your visit. A holiday can be enjoyed with less, or no, booze. If he's determined to drink, and it sounds like he is, he will find another reason to do so.
Because I've been married to a person with substance-abuse issues (alcohol and others), I would echo the "run from this man" view. Mine too initially came across as a sweet, gentle man, who seemed to want the same things from life I did. It turned out that he was more like a rebellious teen than a grown man. The longer we were together, the harder it was for him to hide his problems. It doesn't even sound as if your man is trying to hide his. Consider it a warning.
It sounds like the prospect of being in the UK without the possibility of even visiting "home" for a long time has made you think hard about the conditions under which you would be there. I don't blame you. If you decide to make this move, look up the nearest Al-Anon group and women's shelter to where he lives. You may need at least one of these.
Dennis also made good points. If this man continues with this behavior, including putting a burden on you for his happiness, he's not worth it. He needs to be happy with himself before he can be happy with someone else. Good luck, and may you make a decision with which you can feel at peace.