How long will it be until I stop wanting my ex?

He's the first thing I think of most mornings and sometimes 3 or so times fleeting in the day.

I can't work out if it's the routine of our on/off again or if it's a genuine longing.

My desire to be physical isn't there. But to just share some of the best things that has happened recently is grating on me.

I feel lost.

We've known each other since 2009.