I need help

So I have a boyfriend and we've been dating for about 4 months now. I haven't told my parents yet bc I don't know how but that's a problem all in it's self. Anyways, school starts back in 1day and I stress about little things alot. So, at lunch I want to sit with him, but at the end of the school year I started sitting with different people and the people I used to sit with hate him. HATE HIM! And I also have a fear of embarrassment so I don't know how to work this out. Where do I sit? Pls help.

Also im going into 8th grade and he's my first boyfriend.