I know this sounds pathetic, but I've been hamstering it to myself. I've been in an LTR for a little under a year. Everything seems to be going great, I've been RP from the start, and there's no reason to break up, aside from this.

About a month ago my GF and I switched to a texting app because she missed her phone bill. The app shows the persons current GPS location when you send a text (which I turned off for my texts, but she left on for hers). The problem is about 40-50% of her texts are coming from an address that's about 4-5 minutes from her house. When I'd ask about her day she would never mention visiting someone's home.

I knew that if she was guilty and I confronted her I wouldn't get a straight answer. I've resorted to driving by her house on nights when I get off work, because my work is close by and I get off around 11 at night. If she isn't home I drive to the other house to check, then go home.

Last night I checked her house, she wasn't there, so I checked the other house, and decided to swing by her house one more time. On the way back I drove right past her while she was waiting to make a turn, and she turned right behind me. She was coming from an unusual route, and she followed me for a few minutes while I drove a bullshit route and then she turned back. I did a U turn and saw that her car was back at her house. She didn't seem like she was following close enough to identify my plate, but there is no reason a stranger would have follwed the route I did.

I haven't spoken to her since last night. She's probably not 100% sure it was me, but must think it.

If she brings this up, what do I say? My gut says to flip it and make it about the address, or to deny it. I'm not sure how she will react to being stalked. She saw me coming from the other address so she if she's up to something then she would know I know, and if it's a bug in the app then she would be suspicious about why I was coming from that location.