@whoamiagain
That depends on how you use the word incest. Incest just defines as "sexual relations between people classed as being too closely related to marry each other", or used as a crime for "having sexual intercourse with a parent, child, sibling, or grandchild".
By the crime, it's hence fine to have sex with a cousin. By the definition, it depends whether you think you're too closely related to your cousin to marry them. I personally think it's fine for cousins to marry (though my definition of incest as a crime also stretches to nieces, nephews, uncles and aunts - but then it's variable depending on whether they married into the family or not. If they married in, they're fair game, incest-wise).