Bear with me.
A few weeks ago I made a post about how I was untrusting and checked my girlfriend's phone in regards to her ex boyfriend messaging her and saw that she'd arranged to go for a 1 to 1 meal with him. I wasn't happy about this but couldn't raise it without mentioning I'd be on her phone.
I eventually came up with an idea to say a friend saw them out, which backfired as it turns out for whatever reason they didn't go. But she assured me at the time she didn't want to spend time with him, had no reason to spend any time with him other than if they happened to be at the same event etc. Obviously I was satisfied with this answer.
Until now.
It's gonna sound bad, but I checked her phone again. Second time. And I saw her messages to him, after our conversation. They had a dispute where he was angry that she had invited me over to their flat share before he'd moved out, and she was saying sorry etc. and then said "if you don't hate me we could still go for food another time"
I don't quite know how to take this. They split mutually and have loads of mutual friends, I'm okay with them chatting and being friendly, but they've recently been texting a fair amount and this previous conversation we had alongside this 1 to 1 meal thing really irritates me.
What should I do? I should note it's completely out of character to check her phone, I just had this gut feeling I couldn't shake.