It was original when Pete got his first girlfriend and his first sexual experience whilst at the same time having another sexual encounter with a band member and potential boyfriend. Then in steps the girlfriend's brother and Pete gives him a blowjob or two with his girlfriend's permission, of course. When she pops into her brother's bedroom because Pete is taking too long and sees her brother fucking her boyfriend in the ass, well that's a step too far and she throws him out naked. Pete can only confide his woes to Ant, the band member and potential boyfriend. They resolve it all by having mutual blowjobs, no hard feeling, no blame.
Well, I like fiction, but I kinda like it to have some semblance to reality. Not saying this couldn't happen as you imagined it, but it rather needs a bit more depth and interaction between all the characters to be believed. I mean our hero Pete has gone from a shy boy singing in the choral to a quasi rock singing front man super star, adored by the crowds, and who has sex at every opportunity.
We've got sex and music, where are the drugs? And, my god, it's all so polite!