S.
that is very common...they all do it....there are two parts of my response..
1. try having a daily routine before bed time..ex. dinner, a little mommy and me time, brush your teeth, bath, pajamas..then bed time..try putting him in his bed and just sitting outside of his door, not really paying much attnetion to him..and everytime he get's out of his bed in a calm voice say its bed time...your gonna have to do this a million times at first...but eventually he will get used to the routine and just fall asleep...He wants a reaction out of you, so by you just sitting on the floor outside of his bedroom he can see you, just try to ignore him...(I saw this on nanny 911)..and it helped me..
2. eventually he will get more independent and not want to sleep with you...I say this becuase they are only little once so I try to enjoy them in everyway I can(especially when I am tired and want some sleep)..If you find that #1 isnt useful or yor just to tired to try that then let him sleep with you, when he starts day care (if not already there)..then he wil gain more independence and not want to sleep with mommy, but he is a big boy and want his own bed...
Good Luck..to you...