Unsure of my situation

So im currently a 37 year old virgin. I have zero desire for sex, no desire to make out, dont like to be touched, just not physical at all.

Thinking back, i was very sexual when i was super small. Well between 7 and 8 years old. I dont remember anyone sexually abusing me but why did i do a 180? I was even wanting to make out with my cousin who is a girl. I dont understand A why i was so sexual at such a young age and B why i dont want it at all now? I'm guessing/thinking/assuming i was inappropriately messed with but since i dont remember, can i just chalk it up to no longer being interested due to my past. I'm embarassed to talk about this to anyone but i think im going to have to somehow. Thanks

7,8, seems a bit precocious, but if you don't remember any sexual abuse...

Could it be that you've become asexual in your orientation? Do you feel the need/desire for romantic relationships or close companionship (minus the sex) with anyone?