Still in love with my baby daddy & dating a new man.

So here is thing me and my sons dad were together since we were 13 years old. We loved each other a lot. However he did cheat & hurt me a lot when we were younger. But when we were 18 we found out we were expecting a child. So we put the past aside & had our son. Everything was good we never fought & we loved hard. Finally at 21 we decided to take the next big step & move in. So he moved in with me & my family. However 2 months into living with me I️ found out that he had cheated on me after I️ had our son. . I️ was devastated but we were so happy & everything was good that I let it go. . . 4 months later he leaves me for a 27 year old women who has a 5 year old daughter. . I️ couldn’t believe it & I️ was so hurt. . After a while I️ met an amazing mans. Who is literally everything I️ need in a man. I️ do care about him & love him. But I️ don’t think I’m in love with him. . I️ think I’m still in love with my ex. . But he wants nothing to do with me. . & it hurts me so bad because I️ just wanted to be with him & have a normal life with him & my son. . Because I️ never had that. I️ know I’m wrong & I️ know I’m dumb. . So does anyone have any advice on how to move on how to just forget someone . . It’s been almost over a year since we split. . .