u/Few-Day-2775

Allright hear me out (Also I am norwegian, and there might be spelling errors)

I recently started picking back up contact with my ex and we started meeting again after he ended the relstionship back in November. He ''blamed'' the fact that he didn't know who he was alone, and that he didn't feel like he could be who he wanted to be in a realtionship. Which honestly at the time made sense. We continued to speak on big holidays messages like ''I love you, I miss you'', and he wrote the same. I had given him a key to my apartment while we were together and I delivered back the brithday gift he got me, along with other things he gave me during our relstionship bevause it hurt too much to use or have them. When we met back up at the end of feburary, we kissed, and then we agreed to meet back up a week later which ended up with kissing ect and that things felt like they were back on track - but slowly. I even asked if he was dating someone, or had a girlfriend - he said no. (which I have on text). Not once did he mention a relationship with another woman (They had apparently started dating in the beginning of december). I found her Strava this morning, because he had been at a wedding in italy, and she posted allot of cute photos of the two of them - and there were more of them. I realised the situation. I have been the side piece for 2 1/2 months to someone i truly loved more than anything and I loved his 3 year old equally. I am now debating if i should tell the girlfriend, because she of course does not deserve this. And I want to show her screenshots of messages during the dates from what i can link up with her posts on Strava (Its a fitness app for those who don't know, you can post pictures and the activity you're doing).

When I found this out this morning I wrote him ''Wow, you are a disgusting human being'', and he responded with: ''We can talk about this when i get back home''. It's been 6 hours since the message and still nothing. What is the right thing to do here?