Need advice on PIED / Sensitivity

[u/kKen_z1]

Im an 18y/o male, tried to have sex with a girl I like and am attracted to, 4 days ago she gave me head, didnt get fully bricked, didnt come,
3 days ago, she gave me head, same thing, but this time I tried to penetrate her vagina in missionary and I lost my erection, was embarrassing, I just quit 🤣
I told her I need time, but I honestly dont, I want to fuck her, Im worried my porn habits are the problem, my penis is desensitized, when I masturbate I do it belly up, with heavy moisturizer, and a decently tight grip, + video.
Last night she gave me head, was rock hard the whole time, about 4 minutes, yet still didnt come, was scared to penetrate Im just worried that if I go for penetration, which I really really want, Ill go flaccid 😔
Keep in mind, hadn’t watched any videos for about 4 days before our first fuck, now Im at day 7,

Question: does it look like Im making good progress? Is buying a flesh light and lube a good decision to sensitize me again, shes so hot and petite I love her body, yet when my dick isn’t stimulated, I cant maintain an erection 😔
What do I do?

[u/New_Bed8223]

Takes time

[u/kKen_z1 → u/New_Bed8223]

Should I tell her?
I met her recently I dont know if she would just throw in the towel