boyfriend lied to me about feelings for my best friend

hey guys. i’m 21f and my boyfriend is 21m and we’ve been together for 3 months. we’re currently doing a long distance relationship as well as we met during my exchange year. i used to be friends with this girl (call her d) and i saw her as one of my closest friends. she had a boyfriend of 1.5 years (call him z) and i was friends with him also. they seemed super happy together and i never questioned their rs as it was none of my business. then one day online someone’s profile came up who i had lots of mutual friends with but i had never met (call him w). d explained to me that he was a close friend of hers who id just never met, but it turns out she was cheating on her boyfriend with w, and three other guys. i didn’t know this when me and w started messaging, and meeting up. he even took me out of a few dates, we hooked up (which was a big deal for me bc that shit is scary), and i told him i had feelings for him and he told me he loved me. but, the thing is that even when we were cuddling in bed, or sat at a romantic dinner, or after i just kissed him, he would always bring up d, without me even asking. saying how he used to pat her on the head, how they used to cuddle, how she loves being complimented, how he gave her her nickname… i could go on. so obviously i asked ‘did you/do you have feelings for d?’ in which he always responded ‘no no i dont, we aren’t friends anymore, but i wish her all the best in life’ blah blah bullshit. and one day i got enough of his lying that i contacted d and she told me that they used to date, how they’ve hooked up, and they only stopped like right before i came into the picture. so confronted w about this and he said that he was sorry he lied to me. i asked him if he still had feelings for d at the start of our relationship (because we were OFFICIAL WHEN THIS WAS HAPPENING) and he said yes. now were doing long distance and, even though it’s been two months, i feel so betrayed. he keeps telling me he’s sorry and it was stupid and he has no idea why he lied or liked her, as i look at her profile for the 100th time because she looks nothing like me. both of w’s exes are short, skinny, beautiful east asian women who rock that cute eyeliner and stuff. i’m a 179cm wasian (indian) girl, im a nerd who’s just focused on school, doesn’t wear makeup, doesn’t really have many friends. i just play volleyball and ride motorcycles. that’s it. i feel like… a. fucking idiot.

i have no idea what to even do rn. should i continue this relationship? does he actually have feelings for me? should i forgive him and move on? please help a girl out. any help is so so so much appreciated.

TLDR; boyfriend lied to me that he 1) didn’t date my best friend and 2) that he was over her as it seems like he still has feelings. need advice on what to do!