My friend has asked if her boyfriend is invited to the wedding and i dont know how to say no. I dont particularly like him and we cant afford to give everyone plus one invites. The main thing is that they are always breaking up and getting back together and i dont want to pay for him and then them break up and have an empty space and spare meal where he should have been. The other reason i dont want to invite him is that he constantly smokes weed. As in chain smokes the stuff. Not what i want anywhere near my wedding. Am i being a bit mean?