Tbh ion think so cuz Yoonwon was emotionally still obsessed w uke even after the breakup
Only time a girl was shown was in that bbq restaurant as his fake gf where dae worked
And he knew dae was in his house too and was still stalking dae while he himself slept on streets etc.
And man was fed up when dae didn't confront him so he himself sped the things up
The fuckbuddies is prolly before meeting dae
Also the thing u are saying it's kind of.. like can be misinterpreted from person to person thinking..
The dialogue is more likely "if you are so worried about me being/sleeping with other people, then don't leave my side and tgt/forever w me"
It's the same deflection scenario alot of possessive semes use
U can also see w the timeline issue in school era yoonwon was completely diff. Type of person vs the yoonwon post graduation his arc was shown w only homelessness, drinking, depressed and stalking dae like a destructive mode on himself (miserable) that's why he himself was fed up and confronted dae again instead of finding someone else cuz that's his personality, to make dae his (either in lovingly or in a fck buddy relationship) also dae mentioned fuck buddy cuz yoonwon wanted them to continue anyhow like via fck buddy so he was confronting his pasts (school ones) still a manslut tho

still pissed that the author had yoon fucking other people ughhh,the old yoon wouldn’t of done that