Why would a guy lie about not liking a girl he actually likes?

Anonymous
Okay. So I've been talking to this guy for about 4 months now and we flirt ALL THE TIME. All my friends and my family thinks he likes me. I've also been having trouble with my ex who is sorta a stalker and won't leave me alone, and he is always been protective, even almost ripping my phone out of my hand to answer his call for me and issuing a lot of threats if he doesn't leave me alone. So last night, the same old calls came repeatedly and I finally answered trying to get my ex to leave me alone while I was hanging out with the guy I like. My ex overheard him on the phone and asked if he was my boyfriend and I screamed that he wasn't. The guy looked down and didn't talk to me for almost 30 minutes after that. Later, I asked if he likes me, and he said no. If he does like me, then why would he lie about it?
Why would a guy lie about not liking a girl he actually likes?
3 Opinion