Is it normal that my body involuntarily started shaking periodically?

So I went to the movies with this guy that I really love and we had a great time, flirting and all. Afterward, when the movies ended around midnight, we walked out to his car and I noticed my hands were noticeably shaking. Minutes later, my entire body started shaking; teeth chattering, shoulders and arms shaking, legs tightening and retracting, the whole deal. But I wasn't cold, and I wasn't really that nervous being with him. He held my hands and I tried deep breathing, but that would only work for about 20 seconds.

We tried talking about different things; attempting to get my mind off of the fact that every 5 seconds I would almost fall over from this weird shivering. It began to work, but then I noticed it was working and it came back.

We deemed this as psychological; I must have been anticipating when he would kiss me or something, right? Well even after he kissed me, thinking it would work, they were still kind of there but faded away.

This has happened to me a few times in my life, both while I was under the age of 10; once while I was explaining to a doctor the multiple times I had watched my mother have brain tumor related seizures, and the other was after my father yelled at me for something trivial and I was laying in bed attempting to sleep.

I've looked around on various websites and some people call them the "truth shivers", where you experience moments of sublime or expansive thinking. Another site said the following:

"In all these cases, the prickly feeling helps us to become aware of emotional tension, to dissolve and release it as pure energy without becoming entrapped in emotional dependencies. Neuropsychological studies indirectly confirmed this when they found that “goose bumps” are associated with increased attention and positive assessments, as well as with reduced anxiety and aversion in the persons examined. Thus, in the sense of a holistic cleansing or development, the prickly feeling has a healing aspect, which is inseparable from spirituality.

and

Psychological Cleansing Effect

If we precede thinking in line with the energetic-cathartic interpretation, we learn about the cleansing effect of the prickling/chills/shivers also on a psychological level. Inner tensions are made conscious and get resolved through the experience of the prickly feeling. In fear situations, for example, it is the energy of fear that we release through our psychosomatic body. This allows us not only to stay calm and centered in such situations, but we can even learn to enjoy this energy – fear loses its emotional power over us.

Read more: http://www.ashtarcommandcrew.net/forum/topics/the-chills-of-truth#ixzz35IGx6bH5
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I might have been a little nervous. I'm not sure. But I didn't have many thoughts running through my head other than the awareness of him near me and the stars. Sorry this will get a little weird but after they went away and we kissed good-bye in the car it was the most perfect kisses I've ever had and it was amazing. After I got out of the car and he left I looked at the stars and had this weird sublime moment where I realized I am so so so small and I could see all the stars and ugh, I wish I could experience it again.

Does anyone have an explanation for this?