Is he going behind his back?

so i hang out with this one guy james (we are just friends but he likes me) and this other guy is his friend. "The other guy" sees me hanging out with james all the time and always staring at me when im hanging out with him. He stares at me too when i walk by too and in general.

The other guy asked for my number one day and made it clear he's interested in me. We've been texting but james doesn't know i got his number. I've been gone for 4 days out of town and didn't tell james but i told the other guy friend. I thought that since they are both friends he would've told him where i was but james has been asking me where have i been. Am i two timing both of these guys?

Is he going behind his back?
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