Hi,
A little about myself to start: I'm still a virgin and recently started dating a friend. She has been in a 3 year relationship... So we decided to go all the way, but encountered some problems. To start off she is very tight which was very surprising, I didn't expect my penis to be too large for her hole.... After a few uncusseful attempts to get it in I just lost the erection so that was that... She knows it was my first time so she said it's normal, but was pretty frustrating for me.

So does anyone have any advice?

Assuming you just tried to stick it inside her, get her wet first. Tease her from outside. Rub her clit and sh!t. And then start by sticking one finger inside (middle), cut ur nails too. And then insert two. You must get her lubricated first. Lick her if you want. Get her wanting your cock and she will b rdy. Take baby steps. You can't just learn to ride a bike in one go, it takes step by step. Same thing if your penis is too 'big' or she's too tight.

As for losing erection, just start making out with her and sh!t. If you just stand there trying to force yourself an erection, it most likely won't come. No pun intended.