I want to be a better girlfriend

[Lynn2000]

My bf is super sweet and always buys me stuff, wants me to wear his shirts, hoodies, hats, etc. but for some reason, I'm not necessarily into all that "goals couple" stuff. I don't know why, but stuff like wearing his clothes in public makes me kinda uncomfortable partly because up until I was like 15 or 16, my parents made me think dating is bad or something. we've been together for 6 months now, and even things like kissing make me feel guilty. Also, idk how to kiss better because it's so weird and slightly uncomfortable for me - the whole thing is. but I love him and want to be a better girlfriend and kiss more cause i really want to kiss him, but at the same time, I don't want to because something in me is afraid it's bad and therefore I'm uncomfortable. I want to change this because I know me being uncomfortable is bothering him and I've had multiple people tell me I'm a terrible girlfriend. I've tried to talk to him but he still doesn't get it. Is there something wrong with me?