My LTR of 3.5 years started using an app where you talk to different international people in order to learn foreign languages.

We are in the US and she met this one guy from Columbia that she continuously texts and now claims to be “friends” with. My LTR even introduced the guy to her best friend and the three now share an mutual relationship.

My LTR says the guy is COMPLETELY plutonic, and during their conversations, they practice Spanish.... After about 3 months of this going on, I went through her phone and their entire conversations - and she was telling the truth. Casual conversations and them practicing Spanish/English... She even let the guy know all about me.

Question is, should I have left when this started? And is there a problem with this continuing?