Telling co workers im a lesbian.?

So I am gay, I am getting married to a girl I am soo in love with in august. I find myself tryong to avoid telling anyone I work with that I am gay. I wanna take off work fot the wedding but I doubt I can aviod telling them I'm hetting married and to a girl at that. I wanna tell a close co worker but I'm scared that it will get around. I don't know what my boss will say or how he will react to the news. Also my girl hates when I don't tell people!. What should I do?? Any advice? All welcome!