Relapsed 1 week ago after a streak of 35 days no PMO, going strong! (Summary)

So on the past year or so i have been going on no fapping streaks, some of only a few days, some of a week, some of them of 2 and 3 weeks, one week ago i relapsed after a 35 days streak of no PMO and i made a thread about it, so now i'm again on one week no PMO, but this time i feel like i will finally be able to leave it for ever and reach my biggest goal which is 300 days (I think this is when every psychological and physical effects that are related to PMO dissapear?)

Anyway this time i have a huge reason to become a better person, gain more confidence and move onto the next phase in my life, i have met a girl, a long lost friend that i had lost contact with for about 5 years, and after spending one month with her i can tell i have the strongest feelings i have ever felt for anybody, and she has some feelings for me as well but she wants me to gain confidence before we move on, she asked me to believe in my self and be a man, which is easier said than done, i have 0 confidence in my own self, even though it's almost unnoticeable because it so happens that i'm really really good at pretending.

But since i let her get closer to me than anyone else has, she has noticed that about me.

I want, NO, i NEED, to gain confidence. I have a few questions:

For how long do i have to be on NO PMO in order to regain confidence in my self? And also become more charismatic, eloquent, etc? 60 days in? 90 days in? 100 days in? 300 days in?

Also any advise would be greatly appreciated

Summary so far:
-2 days in, for some reason i had a extremely good mood, which is weird because i had just broken my 35 days streak, i thought i would be feeling sad about it from the very beggining.

-4 to 5 days in, started to think about all of my problems, how i'm 21 years old and i have nothing nor have i accomplished anything in my life, how i love this girl but can't move on to the next phase with her, how my family will take my bad grades when they find out, suicidal thoughts about ending a "temporary problem with a permanent solution".

-7 days in, i have no fucks to give about any of my problems, i am back to my usual "if problems have a solution, why worry?. If problems don't have any solution, why even worry?", i am not feeling extremely good, but i'm doing fine, and i'm happy to know that i can actually archieve something nice with this girl i really really really really like, i really can't relapse anymore, i need confidence, i really do.

Remember to answer my questions and give any advise that you could, please!