My insecurity and constant need for validation is pushing my boyfriend away

Dear Roe,

I’ve been with my boyfriend for a year and I love him very much. When we’re together we don’t really argue and could easily spend days together. When we’re apart though, I tend to overthink things a lot. If he didn’t call when he said he was going to or isn’t paying attention when I’m speaking on the phone, I build these moments up in my head and see them all as, “it’s over, he doesn’t love me, I’m just convenient”. I know that I’m very insecure and I’m aware that I need quite a bit of validation from him. When it’s not there I can get moody and annoyed.