Pain Shopping

Engaging in any kind of behavior to find out if your romantic partner is lying/cheating.

Going through their phone, social media activity, following them, checking their Internet history, promoting another person to "loyalty check" your partner, are examples of this behavior.

I was pain shopping through his phone yesterday to see if he's looking that others girl's photos.

Pain Shopping

Conducting investigations to confirm invited that your partner is cheating/lying on/to you.

Searching through your partner's phone, social media activity, following/surveiling them, and getting someone to "loyalty test" your partner, are all examples of this behavior.

I was pain shopping through his phone today to see if he's still liking that other chick's photos.