Am I overthinking this?

Went to a movie with my ex last night. He said he really wanted to go with me and from Sunday we’ve been texting. After the move he just texted to see if I made it home and was like well goodnight when I told him I made it. I texted him this morning with this. I wanted to keep the convo going but I had no idea what to say. It doesn’t really seem like he’s interested in me. He just wanted to see a movie with me.