Hello everyone
I am seeing someone in my courses and I like him so much but we have never talked but he look at me during the lesson I do the same and I smile but it seems like he can't talk to me and I am the reason he is with me in 2 classes but I am really shy to talk to him and last time he was setting near another girl and she is really sexy and she was talking to him during the class and she was laughing with him and she was also touching him so but however he was looking at me and smiling so please tell me what do I have to do to start a conversation with him

Just go up to him, say: "Hi, how's it going?" and go from there.

Don't overthink it. Go with the flow...

I did it I have said hi how are you and I have asked about something in the class but I think he that his answer was really cold like ice but still he is following me in the class with his eyes so what do I have to do ?