My mom best friend has a son my age whom I grew up with , they visited years ago when I was younger…

My mom best friend has a son my age whom I grew up with , they visited years ago when I was younger before they moved down south and me and him were very close although we lost contact , now I saw a recent picture of him and he really grew into a handsome man , college student and all and he was always a great guy and now all I can think about is him and my mom told me if he were to come back to NY i would leave my bf for him . and she's right ,deep in my heart I know I will because I haven't been happy with my bf I'm 3 years and I know the only reason I'm with him is because of our son. :/ and I always knew this .I love him but not the way I used to, he doesn't give me what I need and he refuses to as well, I constantly feel trapped .