Well, it certainly sounds as if you have made due use of this forum and carefully studied the information here. We do believe that a little attention to stretching should sort things out for you.
Relatively speaking, both of us are quite a bit older than yourself, and probably see your situation in quite a different light. We would for example, suggest that relationships -
a relationship - should not be built (should not depend) on the sexual aspect; or at least should not succeed or fail on this point. I would like to think that within the relationship proper lay the
patience to work through various problems, and this one included. As you should see from my previous answers, I feel that the young lady should be
involved in the remedial process, as it were, and that success might then contribute to this relationship.
Regarding the
GFS device, I had (some time ago) a good telephone conversation with the company principal, which reassures me that the device is well thought out. Its major apparent benefits are the application of pressure in a very uniform manner (and thus, as comfortable as possible) accommodating a range of calibres of the narrow area, and the ability to be left in place for prolonged periods of time (such as overnight, but needing to be removed to urinate). I do tend to suggest that if you are happy to outlay the money (should be relatively cheap just now; the $AUS is presently somewhat ¨down the gurgler¨ compared to the $US), you probably should obtain and use one. I note one fellow (on the forum) here was not so happy with it however.
And speaking of countries, I (we) always like to know in what country and/ or region you are - it is salutary to know what attitudes prevail in different localities, the amount of ignorance including that among medical staff - as you mention - is quite variable. It is also rather interesting to know from where you learned (or did not, and why) about sexuality and such matters as how a foreskin should work!