Is it normal he’s still in love with his ex from 5 years ago despite being a bad boyfriend to her?

So I recently cut ties with a guy I was really interested in..
the one that talked shit about me who’s shitty friend tried to stir drama.
I found out he did say he was still in love with his ex who he dated for 5 years... they haven’t spoken since 2016... he never compared me to her or stated he wanted to have her in the way that his friend claims he did he did say he thought maybe one day he can get back with her.
she was his “one that got away”
I wasn’t jealous, as that was his high school sweet heart, they grew up together and spent 5 years dating, he taken her virginity and he hasn’t been in a relationship since!
however I came to find out that he..
cheated on her countless times with different girls, stole her anxiety meds from her to sell them, physically hurt her, put her in dangerous situations multiple times!

she’s been with a new man for 5 years now and he’s still hung up on her! I spoken to the girl and I’m thankful I did or else I wouldn’t have found out how awful he was! He reluctantly admitted to everything she said being true !
... he apparently still thinks he can get back with her!
Is it normal he’s still in love with his ex from 5 years ago despite being a bad boyfriend to her?
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