This story makes no sense. I think the OP is a troll.
“We have been dating for 6 weeks. We met several times, not sure how many times exactly and also texted/phoned each other often.”
So first you called and texted each other often.
“When he told me he wants to stop seeing me I asked if I can talk to his rabbi. He asked his rabbi if he can give me his number but the rabbi said no. Probably I could find him online, but I was advised against it.”
And now all of a sudden he doesn’t have your number!!!
I don’t believe this is a true story at all.