I think if you are uncomfortable then you should come up with an alternative that you are more comfortable with and suggest it. Maybe re-wording it so that it says something similar and gets the point across but makes you feel more respectful. I'm not sure where on fb you say that you are interested in many lovers, so I don't know how this suggestion might help, but even on dating sites I have been known to ask PN how he feels about my wording on such matters. I never wanted him to feel less valuable and loved by my words. He helped me quite a bit with what I said back then, even if I just took a moment to consider his feelings and empathize with how it might feel if it were he writing it about himself. Maybe suggesting to your partner that they step back and emapthize will help at the very least.
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