I think his underwear is telling him to accept your invitation for dinner. I've had this kind of attraction for ex-GF where the available one suddenly becomes forbidden and it's a huge turn on.
I also don't think he's having second thoughts much. It's way too early. On the other hand, he might not be completely sick of you, like many WAS around here, so that's a start.
You'll have to decide where you put your energy. WAS are huge energy drains. They take over our work, relationships, sleep, etc. As I wrote before, there are other men out there that might be more worthy of your time and focus.
This being said, I don't expect WAS to come back fully committed at the outset. They'll have doubts or maybe they won't even be aware of their doubts. You can go there and just have the no-R talks that MWD recommends in her books. After all, this is how she recommends to reconnect. Be fun, look hot and say goodbye at the end of the evening. See if he initiates later.
M39 D6 D3 (at S) S 2014-09 D 2016-09
"You can't start a fire sitting around, crying over a broken heart" - Bruce Springsteen.
