Speaking as a man, who is not a virgin himself, if i were truly in love with a woman and wanted to marry her, her inexperience would not phase me a bit. Sex in general is kind of hard to make 'bad'. But just being able to be with you, as his wife, in that manner, should be enough for him, and probably will be. Its not all about the action, but its about the connection, and that doesn't require experience.