Wedding invitation?

I alone was invited to a wedding from friends I havent seen in over a year. I've been dating a lady for the past 9 months and want to know if its acceptable to bring her as my date even though her name is not on the invitation? I dont want to ask the party because how could they say no and not offend me. ... show more I alone was invited to a wedding from friends I havent seen in over a year. I've been dating a lady for the past 9 months and want to know if its acceptable to bring her as my date even though her name is not on the invitation? I dont want to ask the party because how could they say no and not offend me. Basically is it acceptable to bring a date to a wedding invitation?
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