Whats wrong with My personality?

Hi im a very cool guy, people seem to like me alot and try to socialize with me however i always have this doubt about them being fake deep inside, i just cant fully trust anyone, always consciously in the back of my brain so my smiles and my behavior comes out fake as well, i really want to trust others, but im just too paranoid about the moment and how others might be talking crap behind my back, so i always end up losing new friends, im just full of life and a real smarta$$ i can make anyone get a heart-attack laugh, girls that deelpy know me end up falling for me hard and super-flirty, however trust issues always get the best of me... they get me so well.. that i feel as if i.. have no identity for being so hidden, i am just full of mystery and i cant figure myself out, im tired of living like this and i just want to live my life without these thoughts, but i just cant let go, i always look serious and when i smile it comes out very genuinely fake and get very defensive about everything and worry too much..... i have so much to offer Any advice would do, and thank you for taking your time.