Pied. first sex in years

Background: I’m 24 I’ve had bad pied for about 5 years. When I was 19 I noticed the quality of sex and erection had decreased and that I wasn’t attracted to real woman the way I was previously. When I was 20-21 I had 3 different encounters where I ended up going home or being in a position to have sex with a girl and couldn’t achieve an erection and just wasn’t into it. It was embarrassing every time and I wasnt craving sexual encounters anymore so I just stopped putting myself in the situation by not going on dates or hanging out with woman where I knew it could lead to this. I have tried no fap in the past even hitting 100 days once it didn’t bring my attraction to real woman back and I gave up on it. This was about 2 years ago and I’m ashamed to admit but since then I’ve been back to my normal pmo tendencies. Well a couple nights ago I was out with a girl who I have been hanging out with here and there for a couple months. We have just been friends this whole time which is what I thought she was wanting and all I wanted given my situation. We were out at a club drinking and having a good time. When we got home we still had a couple more drinks so we were pretty drunk at this point and i was going to sleep over on her couch which is somthing we’ve done before when we were drinking but has never lead to anything. Well this time she was laying with me on the couch and I decided to make a move, somthing I might not have done sober considering our friendship but she instantly reciprocated the energy and within minutes our cloths were off. Now the interesting part was that I was hard as soon as we starting kissing and it led to sex which I stayed hard for the entire time. I didn’t finish and didn’t find extreme pleasure in it the way I used to before pied but I felt a little turned on and was actually able to perform sex and pleasure a woman for the first time in nearly 4 years. In the morning we woke up and it wasn’t weird and we talked about it now being sober and it actually lead to another round. This time I could feel myself starting to lose the erection about 15 minutes In and told her I wasn’t feeling great from a night of drinking. She was cool about it. Just seems weird that I’m this instance I was able to have sex when I wasn’t even able to get a slight erection in years prior. Although it wasn’t a great sexual experience I’m very happy that it happened as it gives me hope going forward. Just not sure what I can attribute the success too. I’ve been living a bit healthier over the last 3 months including the gym, eating more healthy then previously, I switched from vaping to zyns, and stopped smoking weed which I used to do everyday, I drink maybe 2-3 times a month which used to be higher. I’m assuming these have helped me out a bit sexually but with still watching porn and masturbating I’m just surprised with a sudden improvement. I think possibly I have some PE included in this and being with someone I was comfortable with while also being drunk may reduced a psychological aspect. Just wanted to write this down and share, let me know what you guys think.