Manners
Q: I was invited to a wedding from a work friend that I don't know very well and I don't know anyone else that's going. The invitation did not say "and guest". I'm not sure I want to go do you think it's OK to ask if I bring someone? What do you think?
A: It does seem like an oversight not to ask you to bring a guest, but politeness says we don't question the invitation or assume any other meaning. If you feel comfortable in this type of situation you probably would not have asked this question. If you are unsure, you may be mildly uncomfortable. This is not necessarily a bad thing. Sometimes it is good for us to go a bit ouside of our comfort zone. Maybe your friend has seated you at a table of people you will thoroughly enjoy being with. If it turns out to be not so much fun, you can always leave a bit early. If this type of thing is completely out of your comfort zone, you can always decline the invitation and get a gift for the happy couple.