Aaaaarrrrggghhhh just as I think you're growing up, Corbs, and showing a bit of sense, you totally fuck up.
You are denying the truth and deluding yourself:
"My revolving thought process kept wondering if and when Pete would call to explain last night, but the fact that he hadn’t, that he’d made no attempt to contact me whatsoever made me worry that that explanation would never come."
This is a lie, you had a text from Pete and YOU NEVER READ IT !!!! Grrrrrr, I want to shake you - no matter how much I want to kink the butt of the pathetic Brit and tell you to forget about him, he doesn't deserve you. But he did try to contact you.
And then you go into your usual self-destructive mode and have meaningless sex with Lee and even worse: drink yourself stupid.
And now you're playing with the emotions of a nice guy:
"I could do it with a guy that would appreciate me, that could spend the night, that wouldn’t blame our flirting on the alcohol, and that didn’t expect anything out of me in return."
Are you fucking crazy? Nick is probably in love with you ! He pratically told you, saying he'd been flirting with you to get you to notice him, and I bet he didn't just mean in order to get a kiss and a quick fuck. You actually knew better than to take him to bed, when you were sober and on a rebound. And to do it drunk with Pete on your mind ? Didn't you learn from your mistake with Mike? Are you also going to break a cute, kind boy's heart by calling him Pete while you fuck?
But I did when I read this reply: “I told him that I wasn’t in the right head space to… you know… give any head space.”
Oh, and Pete can learn the same lesson as Mike: Too Little Too Late. serves him bloody well right.