Is long distance relationship worth it?

I wanna give him a chance and be his girlfriend but relying on phone to have relationship sounds exhausting.( what if when we are relationship he might flirt with foreign girls and i can’t even know)

For context he studies abroad and i rejected him multiple time to be his girlfriend but he still doesn’t give up on me

I said i can’t reciprocate his feelings towards me but he said he doesn’t care and would wait for me
I pushed him away so many times but he is still consistent after 7 months.

I think im starting to catch feelings for him but yeah i don’t know what to do about it

He will be coming around June 20th and before that i am planning to either cut him off or actually start dating him.
Any advice?