FWB - is it more?

I think things between me and my FWB could be developing into something more. We’ve had this arrangement for 9 months but we only see eachother maybe once a month - not during lockdown obvs.

We met two weeks ago and I stayed over at his house for the first time, and he was the one who suggested I stay. I could be reading too much into this and it turns out most FWB do this anyway! But when we went to sleep we were spooning and holding hands, and we were actually having some really nice conversation.

Are there any other tell tale signs that show it could be more? Especially from people who have been through a similar thing xx