alright bro first off, you fucked up by posting this here. shell find it.
im not gunna go off telling you your a fuckup for cheating, because your a good guy. i like you, and uv been good to me, so im not gunna type out my judgements
my advice is that you either need to STOP THE CHEATING. im not saying stop for now maybe start up later. you need to STOP fucking around on your girlfriend, thats not cool and even close to fair to her... (if you wanna keep going after strange pussy then leave your gf and continue)
if you DO think you have feelings for this new chick (more than for your gf) then be with her. but i dont mean be with her for 4 years and then cheat on her for 2. be with her, and dont cheat on her.
thats my advice, goodluck bro,