My ex fiance for the next 12 hours has broken up with me 3 times when he is drunk. I don't know if I should take him back this time when he comes to me tomorrow saying that he loves me and didn't mean it. Since he keeps doing it doesn't that mean that apart of him wants to?
It could. Alcohol has a predictable effect of increasing someone's mood. That's why there are happy drunks, angry drunks, silly drunks, etc. It tends to just bring out their inner moods.
For your situation, depends on the context. Do you think he's serious? What does he say when he does it? Is he just being silly or do you think it's something credible?
This kind of reminds me of a friend of mine and her boyfriend. Whenever he got drunk, they would always fight over text and he would have similar fights with her about breaking up, etc. But eventually he would keep coming back. Every relationship is different, but somehow with them, it turned out that he did have legitimate concerns about the relationship that were just brought out when he drank a lot. They worked it out and have been together now for maybe 10 years.
Does this sound similar to your situation? It might be hard, but if you're really serious and this keeps bothering you, I would suggest going to 1 or 2 sessions of couple's therapy. It might help.