well he is always going to have a part of your heart, that's just how it is & with the new bf..you probably were comparing the new bf to the old..and nothing he did seemed to measure up..been there before.

so of course he was still in your mind( that's normal). the ex before my last ex put me threw hell and i was insanely in love with her and my last ex before her..kinda helped me through the break up and aftermath..i talked about her A LOT during our relationship..because i was trying to get over her & talking about it helped..after a while it kinda became a problem (oops! sorry about that!)
and she used to get mad, but the more i talked about the things she put me through the better i felt to not keep it inside.

there is a part of you that will always love him, know that..accept it and give yourself permission to move on..it takes time, the girl i speak of it took me 8 yrs to get over her and i stopped speaking to her for 3 yrs after our break up.

now we are friends and i joke about the past..she feels so bad about what she did then..but it's water under the bridge and i am over her now.you can make it..i did..the guy you met just wasn't the right guy & you weren't ready.

just gotta keep trying and you'll get there..hope this helps!