Well it really depends on the guy, If he's all sensitive then you might just have to grin and bear it, But if all else fails just be straight forward. Trust me, I'm a guy and the last thing i would want to do is bore the girl that likes me.
Then it just may mean he either likes you, or one of your are just boring..... lol!
talk to her about it. and dont just bring him up in conversation. pretty much start the conversation with 'i like the same guy you do'.
Probably, yes. Or he's just annoying.
Don't be boring! He wouldn't say you're boring if you were anything but boring. Additionally; learning to properly use the English language, either written or spoken, will greatly help in your quest to have a conversation with this person; assuming their first language is English as well. From the looks of your question though, this person may be mistaking your "anything but boring" persona with someone of lower intelligence or lacking in education.
Be yourself, dont act like a different person. Dont let the conversation get boring just talk about life, hobbies, etc.
Make him less boring ask him questions then tell him to ask you. The conversation can get pretty interesting if you ask questions. A question that you could ask him is do you think im pretty or who are the prettiest girls you know.
lack of confidence
Chances are he's shy and if you like him and you notice he is staring at you and frequently gets near you, he is hoping to spark a conversation. if i were you i would approach him and just create small talk.
just be yourself start a conversation
"i like your abs"
peole can change..and sometimes the same thing gets boring.
just go up to him and start a conversation like hello how are you today? or something to get a conversation started.