PMO Dilemma

Hey guys,

So I've dabbled in NoFap for the past year and a half, basically since I discovered it was a problem. I found out it was a problem the first time I slept with a girl. I couldn't get it up or if I did it wouldn't stay up. I knew what it was immediately (my porn and fapping addiction). Luckily we ended up dating and after about 2 months could have relatively normal sex with issues only now and then. Mind you, I only ejaculated a couple of times during sex despite having sex probably about 30 times in our relationship. We broke up about 16 months ago, and I spiralled back into porn and masturbation addiction afterwards - the whole time knowing that I was in a self-destructive cycle. I was aware the whole time that I needed to stop but I couldn't help myself. I tried to abstain many times but the longest I could was 2 weeks. I basically suffer from death grip and I also masturbate all the time when I have no sexual drive or erection. I make myself get an erection in order to fap - and can only get one from watching porn. I would masturbate pretty much once a day almost ritualistically, sometimes two or three - never really more than that. It was rare that I would skip a day of fapping - it was my daily habit/routine. I can't remember the last time I got morning wood or a random erection without the use of porn. It's like my entire sex drive is reliant on porn. Lately I have been very good and I feel I can hit a 90 day streak this time. I am on a 10 day streak at the moment. My dilemma is I am going back to my home state soon and a girl there wants to sleep with me - we have practically organised it. Problem is, if I stay on my current streak I will only be at 66 days of no PMO when I get there. Should I sleep with her and break the O part of PMO, or give up the opportunity to have sex in almost a year and a half just to achieve the 90 days?

*Also, I am 18 years old (just for reference)
*Also, since my last relationship I have been almost scared to have sex again because I am worried the same problems that happened last time will occur and I will just embarrass myself. Same applies to the potential sex in 66 days