Been there done that

So my girlfriend has this dilemma which is fasincinating because it affects me too.  Yes we are not getting any younger so our preferences are starting to change.  The superficial values don't matter as much as before, you know looks, hmn looks, oh yeah looks and personality.  Personality comes to play more and the value system and maybe financial background, and education starts to pan out.  These items are starting to tie in to what you want in a partner on whom you want to build something long term with.  This is what you want, correct?  Like I said before we all have a list but how often do we really stick to it.  Time goes by because you haven't found anyone that fits your list until now so you make an exception because well he's nice and he's showing interest and making an effort.  You can't fault him for trying and it's always nice to get attention.  No one will pass that up.  So things are going smoothly, he's charming, funny, he pays for everything, you guys are just enjoying each others company.  You're starting to get comfortable, attached, and you're starting to have that dependent feeling.  Then you check yourself......Then that moment comes, that silent moment where you have that quick thought, if he's someone I can be committed to for now, for a while, or maybe to fall in love with.  For me I know if I can commit.  If I can be faithful to, If I can see myself falling in love with you.  Right now I haven't thought beyond that because I'm not sure if I want to go there with you.  And why is it that I haven't looked beyond this moment.  Maybe deep down I know he hasn't fit the description on my list or what I'm looking for long term.  It's not so much physical anymore than how he treats me but are we truly compatible for each other.  Am I someone he needs and is he someone I need to grow with.  Like I said I knew and know from the beginning what I wanted before I met him and I know how I can be when I'm with him.  You are stuck in two different directions with no path chosen ....yet.  Which path should you follow  head or heart?  I've been there done that, lesson learned.  For me my head is saying to protect my heart.  Therefore I shouldn't settle for anything less than what will satisfy me.  All good things come to an end I suppose.