You may not consider yourself a "jealous person," but we're all susceptible to feeling jealous on occasion. In fact, some might argue that jealousy in a marriage is healthy! (If you didn't care so much, why get jealous?) But it's also one of those emotions that sneaks up on you and catches you off-guard. Just look at what's rumored to be going on between Fifty Shades of Grey's leading man Jamie Dornan and his wife Amelia Warner!