Dear tiel:
I found out this thread today and your situation is similar from mine... Me too have 3 kids... he dropped the second bomb about not being sure what he feels for me, because he doesnt feel great being with me a month ago... We were separated 4 months sept-January and after that, splitting with OW, dating out, etc... he came back home..
So, this second speech find me different, with more knoledge about whats is happening with him.... and this time i am handling situation in a different way... in a completely different way... I will work for my marriage at the same time i am working with myself... I know that while he see me happy, sure about my moves and life and wishes, not angry, acting as IF he maybe will see inside of him to look for the cause of the problems... because it isnt me...
I always question if he is in home only for the kids... also he go away a first time, a second time for them will be more difficult to handle... so, your not the only one... the only thing that makes me think he is not completely unhappy being with me, is his behavior... his last days behavior... if he was in home only for kids, he wont be kind, polite, and even get out with me alone... So, lets the time gives us answer and patience... And i hope times lets them light for looking in themselves...