When I come back he seems happy to see me... then he slips back into the tunnel.
What happens, what triggers him slipping back into the tunnel?
Off the cuff, is it something you do? Do you turn off the TV? Turn on the TV? Start talking alot? Be honest with yourself, is it something you are doing?
If it isn't, and your honest about it, then let him see you, be happy, then find your own corner of the house away from him.
Experience is a brutal teacher, but you learn. My God, do you learn. - C.S. Lewis
Life is usually all about how you handle Plan B. - Jack3Beans
Listen without defending; Speak without offending - FaithinAK