i never smoked cigs but i've given up smoking for 2 yrs now

I can give you unlimited monopoly money, Rozey and I'm a pretty good cook

Amazing

Okay it seems like I am asking for a lot of advise lately but then again my life has changed bunches. So here's my dilema, my ex wants to come to my little sister's high school graduation and party. I want to be selfish and tell him he cannot come, because everytime we talk he makes me cry. Seeing makes me cry. Our father and his brothers hate my ex. My little sister has said it's up to me if he comes. I understand he wants to be there, after all he worked on her with her speach impediment, gave her the don't do drugs, and respect your self talks (my parent's flaked, and he stepped up). I just don't know what I should say. I could let him be at the party for an hour while I go for a walk or something, but there are only 32 people graduating in her senior class so, I will have to see him if he goes to her graduation.