How to get over being "frigid" ?

This guy ask me out and I didn't want to say yes but I was pressured to say yes..so now he is my "boyfriend"and he hugs me and all in the public and I get really irritated and I've told most of my closest friends about this and they say that I'm frigid...also I get really shy when he hugs and gives me cuddles right in the public but I really do wanna stay with him but if don't wanna do PDA will it offend him ? and all I wanna know is how do you get over being frigid.. thank you
How to get over being "frigid" ?
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