Mental and physical cues, such as: * Heart rate rises * Mind starts racing * Loss of focus * Feeling of panic * Feeling of losing control Presence of a trigger, such as: * Seeing the person again * Hearing someone talking about them * Seeing their picture on social media * Seeing a couple holding hands or looking happy Seeing something illogical about your thinking, such as: * Relating another couple’s happiness to your own * Letting someone that you’re not with anymore affect your thoughts and feelings * A reaction that’s out of proportion to the trigger, like a feeling of intense panic over a social media picture