Too shy and nervous to kiss. What should I do?

I am 21 and I have never had a boyfriend. I have had guys interested in me and I have been on some dates. But I think the guys might get confused by my actions... when ever a guy has tried to kiss me I get too nervous and embarrassed and I shy away from them. So they probably think I'm not interested. How can I get over this? I get so shy. Especially if they try to kiss me in a public place... and I'm worried I will do it wrong or he will try take things too far.
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im also too shy to dance.. I always get asked to dance and I say no every time... guys must think I'm rejecting them but the truth is I'm just too shy. what should I do? I want a boyfriend but every time someone is intereted in me I do something to put them off... just because I'm so shy and inexperienced.
Too shy and nervous to kiss. What should I do?
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