There's this male coworker that for the past two month I started working he has been flirty around me ( touching my hand while walking on the hall way, toush my hair while I write in my desk, compliments my clothes and doing few favors I asked him related to work) however today we got to talk more and get to know each other. Nevertheless, today out of the blue when I was about to leave he grab my hand, open my hand and place a small piece of paper with his name and cel phone number. He smile when I look at it and told me to call him to hang out. The thing is that I have a boyfriend and if I hang out wit him I don't want him to get the wrong idea. Still I wanna be friends and hang out. The other thing, I find him with a strong sex appeal. What should I do?