My LDR Ex wants me to leave my bf...to be his sidechick

Y'all, this is wild. I have an ex, he lives in Delhi, Im from Southeastern USA, we met online and dated for a few months, but he became obsessed and in kind of a weird way, talked about my body in a way that made me uncomfortable, demanded we stay on vc while i was in class, while he brought friends over to show me off, on vc, while im in class. We boke up, but stayed in contact, hes not a bad guy i think, just lacks self esteem and just kind of cringe tbh

I've been dating my bf, who is my classmate, for almost 3 months now, and I love him so much. Rahul (my ex) has this entire time begged me to block him, then not block him, then leave tristan for him, just carries on, says im all he has, im his first love etc

He just told me earlier this week he has something to confess. Y'ALL. HE HAS A DANG GIRLFRIEND. FOR THE PAST 5 YEARS. She is in a school about 2 hours away, leaving him lonely. He told me yesterday he loves her with all his heart, and when she graduates they will marry and he plans for them to move to Germany. But he wants me to leave my boyfriend so i can be his sidechick. He says he can keep us both separate, he loves her but i am so kind he truly cares for me. 

I'm just flabbergasted. 

Sir i do not and never have loved you THAT much