Why Am I Not Interested In a Relationship?

I find guys attractive, & im definitely not an asexual or aromantic, but whenever a guy shows interest I just can't bring myself to take it to the next level. Physical acts of affection and just romantic crap in general make me feel uncomfortable & corny. I don't know why I feel this way because I've always been wanting a relationship.
Updates
+1 y
when I say physical acts of affection I also mean hugs, kisses, & saying "i love you's" , all of that makes me feel disgusting lol, maybe I'll just die alone
Updates
+1 y
Also, I'd like to add that I am very shy & closed up around guys, to the point where I seem really rude when I'm just shy. However I am perfectly fine around girls & I am able to make quick friendships with them.
Why Am I Not Interested In a Relationship?
Post Opinion