Why was my ex-fwb staring at me?

So basically I broke things off with my ex-fwb because he didn’t want a relationship with me. I go to a bar with my friends and he complimented me on my outfit and I just said “mmhmm” and he walked away afterwards the whole time he just stared at me even though he was there two other girls

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+1 y
Context: Also I didn’t sleep with him yet the reason I called it an friends with benefits was because we were still missing and stuff
Why was my ex-fwb staring at me?
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