Of all the ways to discover your partner is apparently cheating on you, you wouldn't expect to find out on a fitness app.
And yet that's exactly what happened to one TikToker, who posted a video about her experience.
Megan McGee (@meg.c.mcgee) from Savannah, Georgia, recounted a time when her now ex-husband asked to go on a break out of the blue - which sent alarm bells ringing in her head.
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This sent her to do some digging, thinking something "bigger must be going on here" - leading her to check his profile on Strava.
ICYMI, Strava is a fitness app predominantly used by runners and cyclists to track their routes on a map.
"The important thing to know about Strava is it shares your map with people," McGee said, meaning if you have a public account or have opened up your account to your friends, they can see where you've been.
As a married couple, McGee was obviously following her husband on the app, so could see his tracked workouts.
"Looking back I even remember there being times when I offered to go on runs with him but he would make up some excuse about how he was going to run too far for me, I wouldn't be able to keep up," she remembered.
She refers to herself as an "FBI-like detective", scrutinizing Strava maps and realizing that it looked like something fishy was going on - she thought the data revealed that he was constantly running to someone else's house, leading her to suspect an affair.
"What I ended up finding out through the Strava running maps was that he would start his 'run' at our house and he would end it at her house - she lived probably half a mile away," she said.
Of course, maps aren't exactly hard proof of a partner with a wandering eye, but McGee said this helped her build up a picture of what she thought was happening.
"While this didn't tell me the whole story, it sure gave me a lot of reassurance about who he was cheating on me with and what he was doing all those times he was gone," she said.
McGee's story has obviously hit a nerve, racking up 154.K likes on the TikTok post, and the comments section reveals she's not the only person who's used modern technology to find out about a potentially cheating partner.
"I found out my ex cheated on me when the Airbnb host left a review about how 'he and Martha' were such great guests. My name isn't Martha," one commenter wrote.
Another chimed in: "I found out through the grocery story app. I saw that he was making purchases for items we didn't have at a grocery store nowhere near our home."
A third said: "I found out through Netflix because someone was binging Gossip Girl...".