I think I need a hand hold. 
I'm struggling today with the fear that someone I was developing strong feelings for has, in fact, ghosted me.
We only met 12 days ago. After a week of chatting online and getting along brilliantly, we met for our first date. It was brief, but for me it was electric and when I got home it was to a message from him saying that he couldn't wait to see me again.
He suggested meeting again the following day. And the day after.
After 5 days of seeing each other he stayed over at my house and we DTD.
He's stayed every night since before the ghosting, so five nights in a row.
He's been extremely attentive when here with me, and when he leaves for work he would message regularly throughout the day.
The last morning he was here we had sex, he made me coffee and brought it to me in bed. Then he said about his upcoming 40th birthday and asked if I'd like to go to Italy with him. I declined, explaining they my passport is about 4 months out of date now.
He stayed another 3 hours or so, made lunch with me. Talked about future plans, was generally lovely. And then he left.
And I've not heard a sausage since. Nothing.
I don't understand why he's ghosted me, if that's what he's done.
I feel gutted and keep checking my phone constantly. I fancied the arse off him and I know I became way too invested, so how do I move on from this?