Is it petty to do this?

My boyfriend and I have had a seven year relationship, he has been back and forth with me, broke up with me twice and been unsure every month since. He is about to brake up with me again and this time I’m done for good. I usually get upset and argue when he does but I’m tired of fighting, instead once he does it I’m thinking about just going ghost on him and not even respond to the break up text to not even let him know how I’m feeling. My friend told me it would be cold to just not saying anything but I literally won’t have anything to say