Should i tell him the truth?

It's so important that what we have is in the "now" it seems to me that you are still lonely as this is a detached relationship and you are simply reaching out for something tangible. It is important to connect and feel loved. If you feel this is a mirage or faraway dream, it is important to move on and find something that is real and now. Yesterday is gone, tomorrow may never happen. We only have NOW. Good luck to you