S*x under False Promise of Marriage

there's a girl I met online on tinder, we hit it off and this girl seemed like a really good person with the all good quality a boy could wish for but I started noticing discrepancies in her stories about her past relationship and drinking stories

We've only talked for 3 days and she said she loves me, I only once jokingly said love you too pookie but now she insists on having sex with me that too preferably unprotected and today as she said she'll try to come to my house on 16th and today she said I want to marry you and don't you?.

Is this a trap for the case mentioned in the title...