My husband is still friends with his ex (they dated in middle school so idk if it counts) I had issues with some of their topics of discussions a few times but nothing big. Recently he told me they were gonna go on a run (she's into nutrition and healthy stuff) I'm not into that at all especially now. So I said that sound fun and asked when and where. He tells me they are going on a trail I've been trying to get him to go to with me and our son and he's never wanted to go. Granted j wanted to just walk and he's a runner. I made a big deal about it but got over it since he's actually be working out. He knew I was upset and said he would go.