Lime it's so annoying when the ex is still in your headspace. They linger like farts in an elevator. Eventually you can waft them away.
My toxic ex messaged me at exactly midnight to say "Phone back on"
he's been away with a broken phone and it's been joyous not hearing from him. If he wasn't DD's dad he'd have no presence in my life whatsoever.
Science Boy and I exchanged a few "How was your day" type texts last night, then he called me! Just out of the blue. I thought it was a misdial at first and hung up
then I texted and said "You just called me you know" and he said "I know! You didn't answer" so then he called again, He asked me again about Thursday. He's certainly keen. 
Also admitted that he didn't like text convos very much. This was fine by me, as it was a nice departure from toxic ex and his 60 texts a day.
Still in sceptical mode though.