advice for a girly

I NEED SOME PEEPS TO TALK SENSE INTO ME 

or just tell me what to do honestly because i've spiralled countless times, i've written about it, I cried about it and i vented about it to a damn chatbot. that was low. 

basically i have this friend, we're not close close friends but we're friends i guess and we know some personal things about each other though we don't talk much. 

i like them. a lot. 

i think they know, or knew. BUT the problem is right, THEY HAVE A GIRLFRIEND NOW. 

im happy for them even if i have my own opinions of their partner, i don't know her so it's not my place to talk or anything. they look happy, they says they're happy. 

I WANT TO MOVE ON. i don't know how to. i thought them getting a partner would make me get over it but it honestly hasn't. it's not as persistent as it used to be but it's still pretty constant. I've gotten better in respect to not constantly waiting for messages from them and all that because we used to message back and forth every single day since we started talking and that lasted for a number of months, even going into their relationship we still kept it up. 

i think it's because i'm unclear on how we started talking, like i don't know why they randomly began to message me in to begin with and that might be why i'm still hung up on it. i've tried forcing myself to get over them and like someone else but it's really not working. 

EVEN IF THEY WEREN'T SINGLE, i don't think i would have a relationship with them because of my problems, i'm not ready for a relationship right now and so i don't know what to do. 

please someone just SLAP me