Whenever I'm nervous I get this uncontrollable shaking.

Here are a few examples:

1) When asking out a girl or asking a girls phone number I get really nervous on what shes going to say. I start shaking a lot when she was giving me her phone number that I couldn't type the phone number. I had to give her my phone because I couldn't even write anything down because thats how bad I was shaking. I shake like crazy.

2) When I was making out with my girlfriend I was really really nervous that I couldn't stop shaking. She was weirded out by it and I used the coldness as an excuse. It lasted for over 10 minutes.

3) When i got another girlfriend and asked her out, I started shaking for over 5 minutes until finally she was my girlfriend and such. But I tried to play it off by sitting down in the chair and discussing things with her.

4) When i was in a theatre play practice I started shaking like crazy when I did my lines. I was so nervous that I stuttered and just couldn't stop shaking. Even afterwards I couldn't stop shaking.

I feel adrenaline rushing through my body and just can't stop shaking. How do I control my body more? What is this problem called?