<human>: Could you distill the essence of the text into 1-3 sentences?

This might be early, since it only concerns two dates with two women, but I'm looking for what went wrong so I don't make it three.

I went out with someone I'd been chatting with online for a while. She asked me out and we met in the city. It seemed to be going ok, we were chatting about the usual stuff and while there wasn't heaps of chemistry there didn't seem to be any major issues.

Then maybe an hour into it, she claimed there was a family problem (I won't elaborate in case she sees this) and had to go. She seemed genuine and offered to walk me back. Later she sent a short message apologizing for having to cut it short, and I said it's no big deal and we could reschedule if she wanted. That was the last I'd heard so I figured it was a lack of chemistry or something.

Until the next night, when I went out with someone else (apparently all my dating ability is in getting the first one. I've had some luck beyond it but not much). That lasted maybe 20 minutes before she went off to the bathroom, only to get a call soon after and had to leave. At least she messaged me later saying there was no chemistry and she didn't want to reschedule.

I'm just worried if I come off as boring or even creepy. My friends didn't know. Mostly they were super nice and comforting, but I need to know what, if anything, was wrong with me that got that reaction. I've never really had issues with social cues or anything and I didn't come on too strong, maybe too reserved or something.

It feels horrible that there could be something repelling me like this (and that no-one I know will tell me what it is. I'm big on honesty and my friends know they won't hurt my feelings if they're giving me some harsh truth).

Not to mention I'm apparently the sort of person they needed to get away from asap. Can't believe I've made someone feel that way.
<bot>: Is it common to be rejected mid-date? Or is it like I've thought, and only done when things are going really badly or the person is awful?