Lust or love ?

Is it completely shocking to wonder what someone is like in bed before you go any further , I understand their personality is what matters most but I just can't seem to shake this thought of what if they're not great in bed or in size I mean sex isn't everything but I don't see any point in being with someone you can't passionately make love to .. Does this make me a sex driven whore or is this just normal ? And plus I don't want to rush things and find out and completely ruin my chances cos I was easy to get in the sack 
Ugh first world problems I know but plz help