I met him throught a dating site. texting

how sure re you that he is a scammer

This number was used by someone claiming to be "JOHN LANDIS" of Shawnee Oklahoma. This man claimed to have moved to Shawnee Oklahoma 4 1/2 years ago after being raised in Spain by his mother.  He claims to have a sister named Ramona Wendt who lives in California.  John is supposedly a Civil Engineer and travels to London for jobs.  His Grammar is horrible and his stories do not make any sense at all.  Nothing he says adds up.  He is obviously up to some sort of scam and is preying on women he contacts via Match.com.