Anxiety, how do I deal?

On Saturday night I stayed at my boyfriends, he lives with 4 of his friends in a small 5 bed flat. Usually we all do our own thing for dinner and don't really see each other, it this time we cooked nachos together. I don't talk much to them at this point I literally said nothing the entire time we we're eating, every time I brought a nacho up to my mouth my hand was shaking like crazy and I felt like everything was just going in slow motion. My boyfriend rinced my plate for me and I made a beline for his room and had a drink of water. When he came in I wrapped myself in his blanket and laayed on his bed he said "you know you can talk more". Then he saw my face and asked if I was okay because apparently I was very red and my lips we're very dark. I just burst into tears. I couldn't even tell him what was going on all I could say was that I felt sick which wasn't false because I did I felt like throwing up because I was so consumed by anxiety. He comforted me and I think he got it. I think be realised that it was anxiety. Later when I talked to him about it , I told him I felt bad that I couldn't talk to his friends. He said it doesn't matter but I feel like it does. I just don't know what to do any more, its getting more severe.
Anxiety, how do I deal?
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