The nervous system gets aroused, causing one to get adrenaline in the form of "rapid heartbeat, shortness of breath, and sensations of excitement that are often similar to sensations associated with danger".
Other physical symptoms include "blood pressure go[ing] up a little, the skin...flush[ing], the face and ears...turn[ing] red and...[a] feeling of weakness in the knees".
You can grow into love, but you grow out of lust." Neil Clark Warren argues that physical chemistry is important because "couples who don't share strong chemistry may have additional problems during the ups and downs of a life together." Like Betito, he suggests not ruling someone out on the first date due to lack of chemistry.Dating coach Evan Marc Katz suggests that "chemistry is one of the most misleading indicators of a future relationship.Chemistry predicts nothing but chemistry." This is because chemistry can make people blind to actual incompatibilities or warning signs.Romantic chemistry can be one of the most dangerous and self destructive emotions if left unchecked.Some people will enter relationships with incompatible mates blinded by chemistry.