Stomach ache or heart ache?

ok so i just needa get this out there. ok, so i have a bf, but dont rlly like him. i like this other guy, maybe even love this guy for more than a year. we're frends and stuff. But he doesnt and never will like me. Whenever i think about that my stomach always starts to hurt, or feel weird, like im free falling when i am nauseous. Like i waz nauseous on the plane, but then got pushed out and just started falling and cant stop. I'm gunna break up with my bf, and i kno i wont feel any different. maybe guilt, for agreeing to go out with him and then seeing him be crushed. But i cant stay in a fake relationship.