Last night, my new BF came round mine for food. The evening was all going well until there was a knock at the door and it was my ex. He came by completely unannounced to drop something inconsequential off (that would have gone through the letterbox). We had some stilted chit chat at the door and then he left. I have felt very unsettled and a bit weird since, but don't really understand why.
For background... It was obvious I had company from the extra car parked outside. I moved house when we split up, he only has the address due to forwarding post immediately after the break up. We haven't had any contact for a number of months. I don't want to get back together with him, the split was a long time coming.
I feel like this has really thrown me sideways though, to the point where I couldn't really sleep last night. Not thinking about him particularly, more just not being able to relax. Is that normal?