Getting over an ex...

Vi
It's been over 6 months since I broke up with my ex, we were only properly together for about a month but we'd been hooking up for quite a while before that and we overcame a lot, I was so in love. But it ended horribly.
I just need some tips about how to get over it? I've moved on and tried to make peace with the fact that I'll never get him back.
I'm seeing someone new who I like a lot but I still can't help but miss my ex.
I think it's probably because he was my first love and I lost my virginity to him aswell.
Does anyone have any helpful tips about how I can let go?