I Am In a Long Distance Relationship

Ok so we made it to 4 months but I kind of ended it 2 days ago. I thought he still had feelings for his ex but it was me getting a trigger and freaking out as my last serious boyfriend used to have affairs and I only found out about them after 2 years. Not sure if my heart can handle love and potential heartache at this stage. I was probably enjoying the long distance thing with my new one cause it kept him far away. I've known this one for 30 years and he's a bit upset cause he's introduced me to his parents and buying a house this year for us. I was going to move all the way to him in 2 years. I think I love him.
I've been so hurt in the past where I couldn't eat or talk for 3 months. I thought I was going to die from a broken heart
Not sure what to do