loser in love

Why do I do it? Met a guy online and we both clicked straightaway and messsged and called each other all the time,even started the 'love' word ( I didn't say it first) after a couple of weeks of this we met on Thursday.. was lovely and attentive, I ended up being charmed into bed.. my fault. And now 2 days later he's stopped contact leaving me feeling ashamed,embarrassed and like in the fattest,ugliest,most crxp at sex person in the planet 😔 why do I fall in love so quickly and believe lies? Hurting so bad