♥ just flirt with him
or ask him if he has a girlfriend
like the other day I was talking to this guy on the phone, and he asked if he could come over, and I was like, no, and he was like "oh, so your boyfriend's over" and I said "ha, like I have a boyfriend"
even though he already knew that I didn't, I thought it would be a good example of just casually bringing it up 3nodding ♥