Is it ok when I guy you knew for a couple of years that became your friend says I’ll make you mine the day you become single?

I knew this guy for like almost 2 years and we messed around like tickling eachother him taking the Remote holding it out of my reach and lately he been glancing at my chest and Squeezeing my boobs and ass I’m have a open relationship so it’s not like I shouldn’t be doing this but he says every weekend if me and my boyfriend that I have a open relationship with ever fully brake up that he would go after me the first day I asked what do you mean he said I’ll make you mine I mean is that ok or should I be scared and he is my best guy friend a connection birthday you know let me know what you think
Is it ok when I guy you knew for a couple of years that became your friend says I’ll make you mine the day you become single?
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