Some weird overthinking crisis?

I feel really stupid for asking if something is definitely wrong with me for freaking about when it comes to the thought of being with someone or even trying to do the deed (I'm pathetic I can barely say it normally, anyway) I get cold feet before asking someone or whatever whilst simulataneously just wanting the same. Like I'm gonna suck at it or just be a huge disappointment when people are just "oh" (exaggeration).

I'm not sure if it's a mental thing or just the fact that I'm still not sure where I fall (I've just been saying ace, though I know I don't think I fit in, hence me thinking something is broken somewhere).

​

I highly doubt this made any sense. I'll try to elaborate with replies.