Does this even sound right?

So for awhile I’ve just had a FEELING my bf was being dishonest and unfaithful to me and he sent me this. Apparently this is his ex.

And this is how he explained it to me.

To be honest I find it weird to still have her number. Me and him have been together for 6 months. I haven’t talked to my ex let alone wished them a happy thanksgiving. Maybe it’s nothing and I’m over thinking it. But the “can you give me a call” and the whole “I’m not upset I just wanna know” thing is suspicious asf. It sounds like they have spoken before recently and he’s just not showing me. Because he sent me all fb message screenshots, his snap chats, and his life360 data. Nothing there so where’s this past conversation at??