I feel stupid

I feel like everyone around me just use me and at the end when I need some Friends im totally alone, plus my boyfriend cheated on me and then told me he actually wanted to be with the other girl and didn't left me for pity... and I FORGAVE HIM!!! And now we're back together but I feel like he is with me because he knows I'm good and that I'll treat him good but no because he loves me or something