Was asked to stay but I left anyway . . .

Sitting here at the airport.  Tired as hell, was asked to stay but I left.  My mom left with my 2 youngest earlier this morning, Chris has decided to come home with me.  Like I need more to do but I am not complaining to be honest I welcome the help.  His dad while be coming to see him in a few weeks.  Travis asked me to stay for a few weeks while help him get things arranged.  I told him that I had a life and a job I had to get back to.  
I see my son a lot.  I don't spend an excessive amount of time with his dad or their family even though we have been known to do things together.  I am finding this situation weird I guess because I'm single.  And now so is he.  
Subtle things he has done over the past view days are freaking me the hell out.  I keep telling myself I am reading way to far into this and it's all in my head.  IS it all in my head?  I have a plane to catch.