In avoiding conflicts, you also avoided resolutions. Your drinking episode also was merely the last straw to a growing resentment that was never dealt with.
If you have read enough posts here, you will find that they always start with,
I had been with my boyfriend for 3 years...
we have been so good together, never have we been through a rough patch for weeks on end or anything we just have the occasional silly fall out that any other couple would! anyway,
Like most young couples ( in time together, not necessarily age ) you gloss over those silly little arguments, and never think twice but they do add up, especially when a major one comes along. Like your drunken outburst.
I'm really soft an I'm always running after him anyway, I do everything for him run around for him an
if we argue an i think I'm in the right id just give in an let him win cause hes so stubborn he wont give up so i just give in to save the arguments.
So the issues are never resolved and it comes back to bite you, as your seeing Now. It was never about you getting drunk, ONCE ( by what you have written) but all the other smaller ones that built up.
He says he still loves me the same but he can't give me any more chance
because he thinks we just argue over the same thing whenever we do end up arguing..
Taking the easy way out only hides the real reason there is a conflict. So
what I strongly suggest is leaving him alone, and having no contact with him what so ever, and skipping the birthday party.
Radical and unthinkable I know, but again your taking the easy way out, by dressing up, and chasing him yet again.
DON'T, because that just fits into the pattern of what you have been doing to please him, instead of for once standing your ground, and resolving issues.
Communications have to be going between you, and that's not happening, and as bad as I have described your actions, his are no better, but breaking the cycle is the goal, whether you get back together or not.
Either you stand for something, or fall for anything, which is exactly what you have been doing.
Stand for yourself this time. Resolve your own issues in this time apart, and be better for it. You, like most couples have floated along for a few years, and now its time to recognize the real work a couple has to go through, to grow together.
Its about more than just having someone, its learning how to talk, listen, pay attention, and willing to work together.
Yes it gets ugly sometimes, but YOU need to know how to resolve your issues and move beyond them, and sorry, that takes time, and in your case, apart.
By the way chat/text is confusing and hard to understand, so English please, or at least some sentences to understand what your writing.