I have this friend and he tried to have sec with my sister but tried to date me. Weird I know. But my sister told me that she called him to ask about going to do something they both know I would be upset about and when I asked him about it he lied to me even after I told him my sister told me. That’s not the first time he lied to me when it came to my sister he lied when I asked her about taking drugs that he knew she took. Is his loyalty with my sister? And why would he lie to me?