Girls and boys what should i do? ?

well theres this girl i sorta like ive known her for about a month and we hanged out about 4 times. The instant i meet her i liked he but she had a boyfriend. her friend thought i was sexy and we started talking then later on there was rumors starting about me playin her so now her friend doesnt like me . but now the girl who i first meet is single we flirt she sende me a pic of her grad dress but she flirts wit a lotta guys she always asks to chill. ahould i say i like her or wait?