This is could be an indication that the guy has romantic feelings towards the girl. It could also be a sign that the guy has insecurities about girls in general, or it could be a combination of both.
sympathetic
In the lovers' quarrel, Lysander's feelings towards Helena change drastically as he becomes magically enamored with her instead of Hermia. This sudden change is due to Puck's mischievous intervention with the love potion, causing Lysander to abandon his affection for Hermia and direct it towards Helena.
it becomes hot due to friction
Your girlfriend has started generated heat all of a sudden because she is either having a fever or she is tensed and nervous.
Maybe he has done something mean to you but you don't care or maybe he loves you.
Sudden hot flashes and the feeling of butterflies in your stomach may be because you are nervous. You could also be sick, so you may need to see a doctor.
nervous system controll and co ordinate the body functioning. reflex action helps to safeguarde the body from all sorts of sudden unexpected dangers
ANSWER: Your husband/wife, boyfriend, and girlfriend will say something to you or in other case you will get all the sign. And one thing for sure you yourself can tell because if you were such a loving person in the past and all of a sudden you becomes cold towards your partner..
Nervous: (1)easily agitated, (2) excited in anticipation. Panic: (1) an overwhelming feeling of fear and anxiety. (2) be overcome by a sudden fear.With these definitions I would say they are not the same.
a sneeze
Coughing
nervous