i'm having a huge issue

soo i'm in a long relationship and i have a problem. i know you are going to be like wtf and what not, but im having an issue about tongue kissing. everytime when i start to kiss w tongue i get super uncomfortable because i do not know what to do with it. circylar motions are way weird for me. im super embaressed and if you can explain to me why im feeling this way. i don't want to talk with him about it because i thought oh well you just stick your tongue in it and end of the story.. i know im being paranoid and everything but i just want to make things right and kiss like normal human being in the relationship.

ps. im his first kiss so he is technically learning from me soo..