Practice Turns Into A Relationship

I was 16 and very shy around girls and at that time i had never done anything with a girl.whenever my friends would talk about sex i would quickly talk about something else i was embarrassed that while they we're having sex i was wanking off watching porn,I didn't no at the time but everything was going to change i skipped school one day and bumped into my 14yo cousin who was doing the same and invited me to skip school at her house, within the first hour she started saying that girls in school like me so how come im single and this time i told the truth.i was waiting for her to start laughing but got a different reaction she offered to help me,she let me practice kissing her as we sat on her bed, in between kissing i explained everything even that i only seen a girl naked in porn she then tells me the best way to stop being embarrassed is to be naked Infront of her.it took around 20 minutes for me to agree to prepare myself i went in her mum's bedroom i was focused on not letting the nerves get to me and keeping my erection,I walked in to her room not looking at her straight away leaving it a minute before i turned facing her and was expecting to see her completely naked,the one thing i should of worried about happened i ejaculated some on her bed but mostly on her floor,she wasn't even mad that i just done that she just told me it happens and the best way to get over it is get straight back in to the action and that moment she took my cock in her hand and started wanking me off and didn't stop until i cum again,it was only a few minutes after still naked she starts kissing me again and i some how end up on top off her she asked me to lift up a little and gets hold of my cock and started guiding it in her pussy,I seen porn and knew that part and started fucking her the best i could i might of lasted a minute before i cum for the 3rd time we had sex another time before i had to leave since then we have had sex most days in the woods everywhere in her house ,best moment was in the school toilet the door was rattling as she held on with me fucking her from behind,we don't take any risks we make sure if it's going to be at her house it's when she's working or if my parents aren't home.