No. Ask ur gf to relax, keep tighten pussy then who also can't last long. Wear a condom, will last longer. Finally is think of her, put a goal she cum first only you cum. It's all about mentality. Last time u watch porn, your goal is to cum, ur brain auto program to cum. Hence once fark u very fast cum. It's all in the head. Dun even think about cum, dun think u dowan cum fast, dun think how to dun think dowan cum fast.

Basically don't even think anything about u cumming. Clear ur head and focus on her only.