So you are saying he might give it his all but he has to first see where it goes with me?
in a way yes, but he wants you to give him your all first, otherwise it won't go anywhere.
Crappy deal but I amAssuming it must be from a past relationship that has left him scarred?
yup, most definitely.
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No sex yet.
Then it means he's dangling "relationship" out there to get you in bed.