Hey man, good thread and interesting topic.

I'm also mid 20s, tbh I kinda had a similar problem to you initially (some degree of DGS), and watching porn from a young age when the brain was still developing has a lot of consequences. A lot of younger guys have the same issues too - quitting porn is practically a rite of passage.

not sure if you've read this thread or not, you might get some more insight
http://www.aus99forum.com/showthread...ns-of-a-Soyboy

Some tips
- like the other thread says, get a fleshlight or something, ideally the loosest one possible. To get used to the sensation of the pussy. Try to stop using your hand
- get on NoFap, try once a week (w fleshlight) but don't beat yourself up if you 'relapse'
- eliminate all porn. Easier said than done, but there's little merit to watching it - it just makes you a cuck with fried dopamine receptors
- Your punts are very spaced out, I would ditch the massage and go straight to a brothel for FS (to get more direct "hands on" experience). I would also up the frequency for the short-medium term until you overcome your issues. 1x/week or 1x/fortnight if finances are tight.

The above (increased horniness + increased sensitivity) should help your brain associate ejaculating with a female, rather than your hand or to pixels.

For recommendations I strongly suggest K Ari at GE, she has a milfy vibe and is very big on DFK. She will take the lead. Her pussy is pretty tight too. Unfortunately I don't think she meets your 170cm criteria, I think she's 165cm or so.

Keep us updated on how it goes!