Apologies in advance: this will be more of a rant but I just need to get this off my chest.

I know the answer to this is abundance mentality, and it's fine when I just hit and quit, but the minute I have to interact with a girl beyond just fucking, it's like my mind goes into default pining mode.

Case in point, I've seen this girl a few times already. The sex is good and we've been busy enough that we don't have to spend so much time with each other. Recently I hit her up wanting to smash, but she had made plans and offered to reschedule. Cool whatever. The day comes and our original plans don't go our way so we don't get to smash, but now it just makes me want her more. I know myself well enough that I will act a fool if I try to do something again, so I've deleted her number and her friends' numbers too just in case any of them try to get in touch with me (they have in the past).

I'm just annoyed that I have to go to these lengths to safeguard what, to me, is my fragile ego. How do I get better at this? I want to be at a point where I don't have to cut people out just to ensure that I don't get emotionally played.