<human>: We were close friends for two years, then one year apart due to college / university.

She's funny, charming and pleasantly nerdy, we seem to get on famously. She doesn't seem to object to joining me for various "out-there" sports and hobbies, and sends the odd kiss via text without prompting.

Problem is that we don't talk every second of every day, and I know that people need their space, but it's like there's a worrying  silence? I can't explain it, I feel like I'm the one to initiate conversations too often.

We reconnected recently as we both moved to the same city, different sides, but an hour or so train's ride away.

I've never been great at asking girls out, I'm 1) autistic and 2) terrified of losing the friendship.

So... thoughts, opinions, advice?

Can you condense the text into a few key points?
<bot>: were solid friends for two years, had a year away, now living in the same city. Seemingly good match, worried about ruining the friendship and general things, including reciprication. OP is aspie.