Premature Ejaculation has much more to do with excitement than with mechanical details. I commented on it in
this previous posting just a little while back. The point is - even
circumcised men with the loss of sensation
that entails, are prone to PE.
So long as your girlfriend
maintains lubrication, "drag" of the foreskin stressing the frænulum should not be much of a problem, even if it
is short and then even if you were
not using a condom, which of course we
do advise you to use with the usual criteria. The condom does protect you from this drag, which is in fact the very same drag resulting from loss of lubrication, that is responsible for condom rupture.
There are
more and
less effective means of applying tension to the frænulum. We believe what we illustrate is
much more effective than simply pulling the foreskin back, and people have in the past expressed the not unreasonable concern that pulling the foreskin
back might stretch and distort the meatus.
The effect you describe of the frænulum pulling the glans down when you apply firm pressure is only to be expected and demonstrates nothing other than that the glans is more
easily distorted when flaccid and that pulling the foreskin back firmly is not a "natural" manoeuvre.
Clearly whether this happens to an significant extent when
erect is by far the more important demonstration.
So you have made the case for stretching your frænulum but there really does not seem to be any
urgency to do so.