I could write a book about this, but to sum it up: It lasted about six months. I felt somewhat too watched and I started changing my behavior. Instead of texts like "what are you up to?" she would send texts like "how many drinks have you had?" Or we'd just stop checking in with each other by text, because we could just see where the other one was. It felt weird to ask "where'd you go after work?" when obviously I already knew the answer. At the same time, I also got a bit too obsessed with checking on her. I started watching for long periods, which got me noticing irregularities. Sometimes at home, her position would move every minute or two, and sometimes it would just stay stuck. Sometimes it showed her battery level and other times not. I started thinking she was spoofing her location. Then I started thinking she'd convinced me to share locations so that she could spoof hers as an alibi. Once, her location jumped to a residential street a mile away from her apartment and then jumped back ten minutes later. Convinced she was cheating on me, I started spoofing my location and driving by to see if her car was at home.
Finally, I showed her the screenshot of the jump and accused her of cheating. Having mostly lost my mind at that point, I went ahead and told her that I'd been spoofing my location and driving by her place.
She swore up and down she'd never cheat on me, she had no idea how to spoof her location, and had no idea what had happened with the jump - her only explanation was that she had been moving her car to park around the corner.
We were pretty much breaking up. I didn't trust her, she was angry that I didn't trust her, and I was angry that she was angry.
We do, however, both have very patient communications with each other. We sat down and talked over the whole thing. She could see why I didn't believe her. I could see why the relationship would not work if I couldn't trust her - and by trusting her, it had to be somewhat blind. That's the definition of trust.
I also realized that, having started sharing locations only a few months into our relationship, I had never developed a sense of real trust for her. We hadn't built that toolkit. Why would we need to? This was like an epiphany. I saw that the trust I needed to work on had been undermined by this technology - and worse, the technology itself was flawed. I came to believe that the jump had, in fact, been a glitch.
I was like - I want to make this work, and the only thing I can think to try now is to turn location sharing off. So we did. And things got a lot better. The last few months have felt like a new, much healthier relationship. Now we call each other, text each other little notes about what we're up to, what we did when we don't see each other. I trust her a lot more than I did before. I have to - there's no choice, other than to break up. One concession we made was to switch on RCS chat, which neither of us usually use, so we could have read receipts. That did more to chill me out than anything.
Anyway, I know this story makes me sound batshit crazy, but all I can say is - maybe location sharing works for some people, but it's not for everyone.